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'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