OF RECENT CROCODILIANS. 137 
a. Intermaxillary bone truncated behind, with a nearly straight hinder 
edge. Face broad, oblong. 
2. Bompirrons. Toes webbed. Legs distinctly fringed. Asia. 
3. Pauinta. Toes short, free. Legs with only an indistinct fringe: 
America. 
b. Intermasillary bone elongate, produced, and truncated behind ; 
sutures sloping backwards and converging, then transverse or 
sinuous. Toes webbed. Legs fringed. 
4. Crocopitus. Face oblong, without any ridge from front of orbit, 
forehead flat. Africa. 
5. Mouinta. Face elongate, forehead convex, smooth, without any ridge 
from orbits. America. 
Il. Cervical disk strongly keeled on each side, and nearly continuous with the dorsal 
shield. Aberrant Crocodiles. 
* Face broad, nasal bone produced into the nostrils. Alligatoroid Crocodiles. 
6. Hatcrosra. Africa. 
** Face very long, slender, nasal bones not reaching the nostrils. Gavialoid 
Crocodiles. 
7. Mecistops. Africa. 
1. The nape with a rhombic disk formed of six plates, which is well separated 
from.the dorsal shield. Normal Crocodiles. 
A. Nuchal scutella none. Dorsal scales in four or six longitudinal series; the outer 
series ovate-clongate. Toes webbed. Legs fringed. The intermaaillary bone 
produced, truncated, and converging on the sides. Estuarine or brackish-water 
Crocodiles. ; 
1. OopHo is. 
Face oblong ; orbits with an elongated, longitudinal, more or less sinuous ridge in 
front. Nuchal scutella none, or rudimentary. Cervical disk rhombic, of six plates. 
Dorsal plates uniformly keeled, in four or six longitudinal series; the vertebral series 
with straight internal edges, the outer ovate-elongate. Legs acutely fringed. Toes 
broadly webbed. Intermaxillary bone produced, and truncated behind, the sutures 
sloping backwards and converging, and then transverse or sinuous. 
Oopholis, Gray, Cat. Tortoises & Crocodiles in B. M. 1844; Ann, & Mag. Nat. Hist. 8rd series, x. 267. 
