| Ridgehead snake | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Suborder: | Serpentes |
| Family: | Colubridae |
| Genus: | Manolepis Cope, 1885 |
| Species: | M. putnami |
| Binomial name | |
| Manolepis putnami (Jan, 1863) | |
| Synonyms [2] [3] | |
The ridgehead snake (Manolepis putnami) is a species of snake in the family Colubridae. The species is endemic to southeastern Mexico.
The specific name, putnami, is in honor of American anthropologist Frederic Ward Putnam. [4]
M. putnami is the type species of the monotypic genus Manolepis. [2]
M. putnami is found in the Mexican states of Chiapas, Colima, Guerrero, Jalisco, Nayarit, and Oaxaca. [2]
M. putnami may attain a total length of 55 cm (22 in), including a tail 14 cm (5.5 in) long. Dorsally, it is pale brown or yellowish, with a brown, darker-edged vertebral stripe three scales wide. Ventrally it is whitish, speckled with brown. The dorsal scales are smooth, without apical pits, and in 19 rows at midbody. The anal plate is divided, and the subcaudals are in two rows. [3]
M. putnami is rear-fanged (opisthoglyphous). It has 15 small, equal maxillary teeth, followed, after a space, by two enlarged grooved fangs. The anterior mandibular teeth are much longer than the posterior. [3]
Boiga cynodon, commonly known as the dog-toothed cat snake, is a nocturnal species of rear-fanged colubrid snake endemic to Asia.
Boiga forsteni, also known commonly as Forsten's cat snake, is a species of mildly venomous rear-fanged snake in the family Colubridae. The species is endemic to South Asia.
The trinket snake, also known commonly as the common trinket snake, is a species of nonvenomous constricting snake in the family Colubridae. The species is native to southern Central Asia.
Hydrophis cantoris, also known commonly as Cantor's narrow-headed sea snake and Cantor's small-headed sea snake, is a species of venomous sea snake in the family Elapidae.
Günther's black snake is a species of poorly known lamprophiid snake endemic to central Africa. It is the only member of the genus, Bothrolycus. This snake is notable as one of the few snakes with notable sexual dimorphism, as well as possessing a small pit anterior to the eye. While superficially similar to the thermal pits of vipers, its function remains unknown.
The smooth earth snake is a species of nonvenomous natricine colubrid snake native to the eastern half of the United States.
Philodryas chamissonis, commonly known as the Chilean green racer and the Chilean long-tailed snake, is a species of moderately venomous opisthoglyphous (rear-fanged) snake in the family Colubridae. The species is endemic to Chile.
Micrelaps is a genus of rear-fanged mildly venomous snakes. It is the only genus in the family Micrelapidae. The genus is native to Africa and the Middle East, and there are four species that are recognized as being valid.
Macroprotodon cucullatus, commonly known as the false smooth snake, is a species of mildly venomous colubrid snake endemic to the Mediterranean Basin.
Aparallactus is a genus of rear-fanged mildly venomous snakes found in Africa. Currently, 11 species are recognized.
Brachyophis is a monotypic genus created for the rear-fanged mildly venomous snake species, Brachyophis revoili, commonly known as Revoil's short snake, which is endemic to Eastern Africa. Three subspecies are recognized as being valid.
Elapotinus is a monotypic genus created for the rear-fanged snake species, Elapotinus picteti. The species is endemic to Madagascar. It is also known commonly as Jan's snake in honor of Italian herpetologist Giorgio Jan. There are no subspecies that are recognized as being valid.
Macrelaps is a monotypic genus created for the rear-fanged (opisthoglyphous) venomous snake species, M. microlepidotus, endemic to South Africa. No subspecies are currently recognised.
The striped whipsnake is a species of nonvenomous snake in the family Colubridae. It is closely related to the California whipsnake. The striped whipsnake is native to the western United States and adjacent northern Mexico.
Micrelaps vaillanti, also known commonly as the black-headed micrelaps or the Somali two-headed snake, is a species of mildly venomous rear-fanged snake in the family Lamprophiidae. The species is endemic to Africa.
The Cape file snake is a species of large, non-venomous snake endemic to Africa, belonging to the family Lamprophiidae.
Leptophis diplotropis, commonly known as the Pacific Coast parrot snake, is a species of snake in the family Colubridae. The species is endemic to Mexico.
The yellow-red rat snake is a species of snake in the family Colubridae. The species is endemic to Mexico and Central America. Three subspecies are recognized.
Rhadinaea bogertorum, also known commonly as the Oaxacan graceful brown snake and la hojarasquera de Oaxaca in Mexican Spanish, is a species of snake in the family Colubridae. The species is native to Mexico.
Rhadinella godmani, also known commonly as Godman's graceful brown snake, and as la culebra-café de Godman and la lagartijerita de Godman in American Spanish, is a species of snake in the family Colubridae. The species is native to Central America and southern Mexico. There are two recognized subspecies.
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