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Polemon Barthii
''Polemon barthii'', or the Guinea snake-eater, is a species of rear-fanged mildly venomous snake in the family Atractaspididae. The species is endemic to Africa. Etymology The specific name, ''barthii'', is in honor of German explorer Heinrich Barth. Geographic range ''Polemon barthii'' is found in Cameroon, Guinea, and Ivory Coast. www.reptile-database.org. Habitat The preferred natural habitat of ''P. barthii'' is forest, at altitudes from sea level to . Description Dorsally, ''Polemon barthii'' is olive-gray, the dorsal scales edged with black. The back of the head is yellowish white. Ventrally it is yellowish white. Adults may attain a total length of , including a tail long. The dorsal scales are smooth, without apical pits, and are arranged in 15 rows at midbody. The ventrals number 221-226. The anal plate is entire, and the subcaudals number 16-18, also entire. The diameter of the eye is ⅓ to ½ its distance from the mouth. The rostral is wider than high, barel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giorgio Jan
Giorgio Jan (21 December 1791 in Vienna – 8 May 1866, Milan) was an Italian taxonomist, zoologist, botanist, herpetologist, and writer. He is also known as Georg Jan or Georges Jan. He was the first director of the natural history museum at Milan. Biography After having been an assistant at the University of Vienna until 1816, Jan obtained the post of professor of botany at the university of Parma as well as becoming Director of the botanical garden. Already in his time at Wien he started offering herbaria for purchase to princely courts - an example being the ''Oesterreichs Flora (Flora Austriae)'', sent between 1815 and 1818 to Karl August, Grand Duke of Saxe-Weimar-Eisenach. In Parma he continued to offer exsiccata-like series with plant specimens for sale, an example being the ''Herbarium portatile'' with the species list published in 1820. At that time, the Duchy of Parma was no longer under Austrian jurisdiction following the Congress of Vienna after the defeat of Na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ivory Coast
Ivory Coast, also known as Côte d'Ivoire and officially the Republic of Côte d'Ivoire, is a country on the southern coast of West Africa. Its capital city of Yamoussoukro is located in the centre of the country, while its largest List of cities in Ivory Coast, city and economic centre is the port city of Abidjan. It borders Guinea to the Guinea–Ivory Coast border, northwest, Liberia to the Ivory Coast–Liberia border, west, Mali to the Ivory Coast–Mali border, northwest, Burkina Faso to the Burkina Faso–Ivory Coast border, northeast, Ghana to the Ghana–Ivory Coast border, east, and the Atlantic Ocean's Gulf of Guinea to the south. With 31.5 million inhabitants in 2024, Ivory Coast is the List of African countries by population, third-most populous country in West Africa. Its official language is French language, French, and indigenous languages are also widely used, including Bété languages, Bété, Baoulé language, Baoulé, Dyula language, Dyula, Dan language, Da ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parietal Scales
Parietal scales are the scales of a snake located on the snake's head and are connected to the frontals towards the posterior. These plate-like scales are analogous to and take their name from the parietal bone, which forms the roof and sides of the cranium in humans. See also * Parietal bone * Snake scales * Anatomical terms of location Standard anatomical terms of location are used to describe unambiguously the anatomy of humans and other animals. The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position. This position pr ... References Snake scales {{Snake-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Supraocular Scales
In scaled reptiles, supraocular scales are (enlarged) scales on the crown immediately above the eye.Mallow D, Ludwig D, Nilson G. 2003. True Vipers: Natural History and Toxinology of Old World Vipers. Malabar, Florida: Krieger Publishing Company. 359 pp. . The size and shape of these scales are among the many characteristics used to differentiate species from each another. In many species of boids and viperids, the supraoculars are heavily fragmented. In others, such as the colubrids and elapids, they are enlarged. See also * Ocular scales * Snake scales * Anatomical terms of location Standard anatomical terms of location are used to describe unambiguously the anatomy of humans and other animals. The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position. This position pr ... References {{Reflist Snake scales ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frontal Scale
Frontal scale refers to the scale of a reptile which lies on the top of the head in the region between the eyes. This is analogous to the frontal bone of a human which corresponds to the forehead. Snake scales adjacent to the frontal and to its anterior are called prefrontals. See also * Frontal bone * Frontal shield * Snake scales * Anatomical terms of location Standard anatomical terms of location are used to describe unambiguously the anatomy of humans and other animals. The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position. This position pr ... References Snake scales {{Snake-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prefrontal Scales
The prefrontal scales on snakes and other reptiles are the scales adjacent and anterior to the frontal, towards the tip of the snout, which are also in contact with the internasals. See also * Snake scales * Scale (zoology) In zoology, a scale (; ) is a small rigid plate (animal anatomy), plate made out of keratin that grows out of Vertebrate animals' skin to provide protection. In lepidopterans (butterflies and moths), scales are plates on the surface of the insec ... References *Wareham DC (2005). ''Elsevier's Dictionary of Herpetological and Related Terminology.'' Amsterdam: Elsevier. 240 pp. . ("PREFRONTAL", p. 160). Snake scales {{vertebrate-anatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internasal Scales
In snakes, the internasal scales are those on top of the head between the scales that surround the nostrils. Wright AH, Wright AA (1957). ''Handbook of Snakes of the United States and Canada''. Ithaca and London: Comstock Publishing Associates. (7th printing, 1985). 1,105 pp. (in two volumes). . They are usually paired and situated just behind the rostral.U.S. Navy (1991). ''Poisonous Snakes of the World''. United States Government. New York: Dover Publications Inc. 203 pp. . Related scales *Nasal scales *Rostral scale See also *Snake scales *Scale (zoology) In zoology, a scale (; ) is a small rigid plate (animal anatomy), plate made out of keratin that grows out of Vertebrate animals' skin to provide protection. In lepidopterans (butterflies and moths), scales are plates on the surface of the insec ... References Snake scales {{snake-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rostral Scale
The rostral scale, or rostral, in snakes and other scaled reptiles is the median plate on the tip of the snout that borders the mouth opening. Wright AH, Wright AA (1957). ''Handbook of Snakes of the United States and Canada''. Ithaca and London: Comstock Publishing Associates. (7th printing, 1985). 1,105 pp. (in two volumes). . It corresponds to the mental scale in the lower jaw. The term pertains to the rostrum, or nose. In snakes, the shape and size of this scale is one of many characteristics used to differentiate species from one another. Related scales * Nasorostral scale * Mental scale *Labial scales See also * Snake scales *Anatomical terms of location Standard anatomical terms of location are used to describe unambiguously the anatomy of humans and other animals. The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position. This position pr ... References {{Reflist Snake scales ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subcaudal Scales
In snakes, the subcaudal scales are the enlarged plates on the underside of the tail. Wright AH, Wright AA (1957). ''Handbook of Snakes of the United States and Canada''. Comstock Publishing Associates, a Division of Cornell University Press. (7th printing, 1985). 1,105 pp. (in two volumes). . These scales may be either single or divided (paired) and are preceded by the anal scale. Related scales * Anal scale * Ventral scales See also * Snake scales Snakes, like other reptiles, have skin covered in scales.Boulenger, George A. 1890 The Fauna of British India. p. 1 Snakes are entirely covered with scales or scutes of various shapes and sizes, known as snakeskin as a whole. A scale protects ... References {{Reflist Snake scales ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anal Scale
In snakes, the anal scale or anal plate is the scale just in front of and covering the cloacal opening. This scale can be either single ("anal entire") or paired ("anal divided"). When paired, the division is oblique.Mallow D, Ludwig D, Nilson G (2003). ''True Vipers: Natural History and Toxicology of Old World Vipers''. Malabar, Florida: Krieger Publishing Company. 359 pp. . Wright AH, Wright AA (1957). ''Handbook of Snakes of the United States and Canada''. Ithaca and London: Comstock Publishing Associates. (7th printing, 1985). 1,105 pp. (in two volumes). . The anal scale is preceded by the ventral scales and followed by the subcaudal scales. See also *Snake scales Snakes, like other reptiles, have skin covered in scales.Boulenger, George A. 1890 The Fauna of British India. p. 1 Snakes are entirely covered with scales or scutes of various shapes and sizes, known as snakeskin as a whole. A scale protects ... References {{Reflist Snake scales ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ventral Scales
In snakes, the ventral scales or gastrosteges are the enlarged and transversely elongated scales that extend down the underside of the body from the neck to the anal scale. When counting them, the first is the anteriormost ventral scale that contacts the paraventral (lowermost) row of dorsal scales on either side. The anal scale is not counted.Campbell JA, Lamar WW. 2004. The Venomous Reptiles of the Western Hemisphere. 2 volumes. Comstock Publishing Associates, Ithaca and London. 870 pp. 1500 plates. . The term gastrostege (from Greek γαστήρ, γαστρός = belly and στέγη, στέγος = cover, roof) was more often used in the older literature, especially pre-1900 but is rarely used today. Related scales * Preventral scales * Anal scale * Subcaudal scales * Paraventral scales See also * Snake scale Snakes, like other reptiles, have skin covered in scales.Boulenger, George A. 1890 The Fauna of British India. p. 1 Snakes are entirely covered with scales or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorsal Scales
In snakes, the dorsal scales are the longitudinal series of plates that encircle the body, but do not include the ventral scales. Campbell JA, Lamar WW (2004). ''The Venomous Reptiles of the Western Hemisphere''. Ithaca and London: Comstock Publishing Associates. 2 volumes. 870 pp. 1,500 plates. . When counting dorsal scales, numbers are often given for three points along the body, for example 19:21:17. These numbers correspond to the number of dorsal scales around the body at a head's length behind the head, at midbody and at a head's length before the vent. If only one number is given, it is for the midbody count. Dorsal scale are easiest to count diagonally, starting with the paraventral scale row. In doing so, it is often noted that certain scale rows are raised, keeled or smooth as opposed to the others.U.S. Navy (1991). ''Poisonous Snakes of the World''. United States Government. New York: Dover Publications Inc. 203 pp. . See also *Snake scales *Anatomical terms of locat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
