{72}_Reptiles 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_ (Calamariidæ) from Cuba, _Hypsirhynchus_ from Barbadoes, _Cryptodacus_ from Cuba, _Ialtris_ from Hayti, and _Coloragia_ from Cuba (all Colubridæ), have been described as genera peculiar to the Antilles. _Phylodryas_ and _Dromicus_ (Colubridæ) are Antillean and Neotropical; _Ahætulla_, (Dendrophidæ) has the same distribution but extends to tropical Africa; _Epicrates_ and _Corallus_ (Pythonidæ) are Neotropical and Antillean; while _Chilabothrus_ from Jamaica and _Ungalia_ from Cuba and Jamaica (both Pythonidæ) are found elsewhere only in Central America and Mexico. There appear to be no Crotalidæ except an introduced species of _Craspedocephalus_ in St. Lucia. Lizards are more numerous. _Ameiva_ (Teidæ) is found all over America, _Gerrhonotus_ (Zonuridæ) is Neotropical and occurs in Cuba; _Gymnopthalmus_ is South American and Antillean. Of Scincidæ seven genera are noted. _Celestus_ (with 9 species) is peculiar to the Antilles; _Camilia_ (1 species) to Jamaica, _Panoplus_ (1 species) and _Embryopus_ (1 species) to Hayti; _Diplogossus_ is Antillean and South American; while _Plestiodon_ and _Mabouya_ are cosmopolite. Of Geckotidæ there are four genera; _Phyllodactylus_ and _Hemidactylus_ which are cosmopolite; _Sphærodactylus_ which is wholly American; and _Cubina_ found only in Martinique and Brazil. Of Iguanidæ there are six genera; _Anolis_, which ranges all over America; _Polychrus_, which is Neotropical; _Iguana_ and _Liocephalus_ which are South American; _Tropedurus_ found in Cuba and Brazil; and _Cyclura_ only known from Jamaica, Cuba, and Central America. _Amphibia._--The genus _Trachycephalus_, belonging to the {73}Hylidæ or tropical tree-frogs, is almost peculiar to the Antilles; Cuba, Hayti, and Jamaica possessing seven species, while only one is recorded from South America. Other genera are, _Peltaphryne_ (Bufonidæ) from Portorico; _Phyllobates_ (Polypedatidæ) from Cuba; _Leiuperus_ (Ranidæ) from Hayti,--all Neotropical. Of the Urodela, or tailed batrachians, no representative occurs, although they are so characteristic a feature of the Nearctic region.