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Loxocemus bicolor COPE, 1861

IUCN Red List - Loxocemus bicolor - Least Concern, LC

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Higher TaxaLoxocemidae, Henophidia, Pythonoidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common NamesE: Mexican Burrowing Python
G: Spitzkopfpython
S: Chatilla 
SynonymLoxocemus bicolor COPE 1861: 77
Loxocemus sumichrasti BOCOURT 1876: 7
Plastoseryx Bronni JAN 1862: 242
Loxocemus bicolor — BOULENGER 1893: 74
Loxocemus sumichrasti — TAYLOR 1939
Loxocemus sumichrasti — SCHMIDT 1947
Loxocemus sumichrasti — ÁLVAREZ DEL TORO & SMITH 1956: 12
Loxocemus bicolor — LINER 1994
Loxocemus bicolor — MCDIARMID, CAMPBELL & TOURÉ 1999: 160
Loxocemus bicolor — MATTISON 2007: 201
Loxocemus bicolor — WALLACH et al. 2014: 398 
DistributionSE Mexico (incl. Chiapas, Oaxaca, Morelos, Michoacan, Jalisco, Guerrero, Nayarit), Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica

Type locality: La Unién, El Salvador  
TypesHolotype: lost, USNM 4948 (presumed lost fide McDiarmid et al. 1999). 
DiagnosisDescription (genus): Prae-maxillary bone toothed. Anterior maxillary and mandibular teeth longest, gradually decreasing in size. Head not distinct from neck, covered with symmetrical shields; rostral large and projecting; no loreal shield, pnefrontals in contact with labials; nostrils lateral, in a small nasal, Avhich is separated from its fellow by a pair of internasals; frontal in contact with an azygous occipital shield. Eye small, with vertical pupil. Body cylin drical; scales moderate, smooth. Tail short, conical, not prehensile; subcaudals in two rows (from Boulenger 1893: 74).

Description (species): Snout very prominent. Eostral broader than deep, the portion visible from above measuring one half to two thirds its distance from the frontal; internasals shorter than the prsefrontals; frontal a little longer than broad, separating the parietals, and in contact with the occipital; supraocular small; one prae- and two or three postoculars; ten or eleven upper labials, fourth and fifth, or fifth and sixth entering the eye (or separated from it by a subocular). Scales in 31 to 33 rows, Ventrals 250-265; anal divided; sub caudals 39-47. Reddish or purplish brown above, uniform or with irregularly scattered small yellowish spots, uniform yellowish white beneath (from Boulenger 1893: 74). 
CommentType species: Loxocemus bicolor COPE 1861: 77 is the type species of the genus Loxocemus COPE 1861. 
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