'72 ZOOLOGICAL GEOGRAPHY. [part hi. 



Me^jtiles and Amphibia. — These classes not having been 

 systematically collected, and the numerous described genera not 

 having undergone careful revision, little trustworthy information 

 can be derived from them. The following enumeration of the 

 chief groups hitherto noticed or described, will, however, show 

 very similar features to those presented by the birds — a general 

 relation to Neotropical forms, a more special relation to those 

 of Central America and Mexico, and a considerable number of 

 peculiar types. 



Snakes. — Arrhyton (Calamariidse) from Cuba, Hypsirhynchus 

 from Barbadoes, Gryptodacus from Cuba, laltris from Hayti, and 

 Golorania from Cuba (all Colubridae), have been described as 

 genera peculiar to the Antilles. Phylodryas and Dromicus 

 (Colubridae) are Antillean and Neotropical; Ahcetulla (Den- 

 drophidse) has the sa.me distribution but extends to tropical 

 Africa ; Upicrates and Corallus (Pythonidse) are Neotropical 

 and Antillean ; while Ghilabothrus from Jamaica and Umgalia 

 from Cuba and Jamaica (both Pythonidse) are found elsewhere 

 only in Central America and Mexico. There appear to be no 

 Crotalidse except an introduced species of Graspedocephalus in 

 St. Lucia. 



Lizards are more numerous. Ameiva (Teidse) is found all 

 over America. Gerrhonotus (Zonuridae) is Neotropical and occurs 

 in Cuba ; Gymnopthalmus is South American and Antillean. 

 Of Scincidse seven genera are noted. Gelestus (with 9 species) is 

 peculiar to the Antilles ; Gamilia (1 species) to Jamaica, Panoplus 

 (1 species) and Emhryopus (1 species) to Hayti; Diplogossus is 

 - Antillean and South American ; while Plestiodon and Mahouya 

 are cosmopolite. Of Geckotidse there are four genera ; Fhyllo- 

 dactylus and Hemidadylus which are cosmopolite ; Sphcerodactyliis 

 which is wholly American ; and Gubina found only in Martinique 

 and Brazil. Of Iguanidse there are six genera ; Anolis, which 

 ranges all over America ; Polychrus, which is Neotropical ; 

 Iguana and Lincephalus which are South American ; Tropedurus 

 found in Cuba and Brazil; and Gyclura only known from 

 Jamaica, Cuba, and Central America. 



Amphibia. — The genus Trachycephalus, belonging to the 



