4 EMYDOSAURIAN ANI) TESTUDINIAN REPTILES 
latisternum, and Elseya dentata being also natives of the depend- 
ency ; furthermore no part of the subregion, except that 
under British rule, has been more than superficially examined, 
and even that portion by no means thoroughly. 
ORDER I. EMYDOSAURIA. 
THE CROCODILES. 
Body lacertiform, depressed, protected by regular series 
of quadrangular horny scutes of varying size. Teeth present 
in the jaws, implanted in distinct sockets. Sternum present. 
(€uvs, a fresh water tortoise ; cavpa, a lizard.) 
Family CROCODILID2. 
Nostrils opening at the extremity of the snout. Pupil 
vertical. Ears with mobile lds. Fore limb with five, 
hind limb with four well developed digits, the three inner 
clawed. 
Fresh waters of tropical and subtropical regions, at least 
one species entering the sea. Genera six. 
Genus CROCODILUS. 
THE TRUE CROCODILES. 
Crocodilus, Laurenti, Synops. Rept., p. 53, 1768 (niloticus): Boulenger, 
Catal. Chelon., etc., p. 277, 1889. 
Oiphilis, Gray, Ann. & Mag. Nat. Hist., (3) x. 1862, p. 267 (porosus), 
Bombifrons, Gray, \.c., p. 269 (trigonops=palustris). 
Philas, Gray, Proc. Zool. Soc., 1874, p. 177 (johnstonii). 
Snout more or less elongate. Seventeen to nineteen 
upper and fifteen lower teeth on each side; fifth maxillary 
tooth largest ; fourth mandibular tooth usually fitting into. 
a notch in the upper jaw* ; mandibular symphysis not extend- 
ing beyond the eighth tooth. A dorsal shield formed of four 
or more longitudinal series of juxtaposed, keeled, bony 
scutes. (xpoxddeAos, the name of the crocodile of the Nile 
among the Ionians.) 
Northern Australia, Western Polynesia, Southern Asia, 
Africa, and the warmer parts of America. 
Only one species of crocodile has as yet been proved to- 
inhabit New Guinea, but since two others—Crocodilus john- 
stonii, Krefft, from the northern half of Australia, and 
*Specimens of Crocodilus palustris sometimes occur in which this tooth. 
fits into a pit as in Alligator. 
