270 Dr. J. E. Gray on the Species of Crocodiles. 



Crocodilus vulgaris (part.), Gray, Syn. 58 ; Duni. & Bib. Erp. Gen. ii. 108 ; 

 Miiller & Schlegel, Verli. t. 3. f. 9 (head?). 



The face depressed, elongate, nearly smooth, with, a slight 

 nodule in front of the orbits. Intermaxillaries rather elongate, 

 half-oblong. 



Hah. Siam, Cambogia (M. Mouhot). 



We have a well-preserved half-grown specimen of this species 

 in the British Museum. It differs from all the specimens of 

 Bombifrons trigonops in the Collection in the face being much, 

 longer, and not so tubercular and pitted. 



As the head agrees with the figure of the head from which 

 Schneider named his species, I have retained it ; and I have little 

 doubt that the two keels which are present in that specimen are 

 either an individual peculiarity, or perhaps a character that deve- 

 loped itself as the animal approached old age. 



** The legs with an indented fringe of short narroiv scales. Toes short, 

 nearly free. American Crocodiles. 



3. Palinia. 



The premaxillary suture straight (see Cuvier, Oss. Foss. iii. 

 72, t. 3.' f. 1, 5). The face oblong ; forehead very convex, with 

 a ridge in front of each orbit, converging in front and forming 

 a lozenge-shaped space. Nuchal plates two or four, unequal. 

 Cervical disk rhombic, of six large shields. Dorsal shields 

 large, broad, in six series ; the vertebral series nearly smooth, 

 the lateral one strongly keeled. 



1. Palinia rhombifer. 



Crocodilus rhombifer, Cuv. Oss. Foss. v. t. 3. f. 1-5 (skull); Sagra, Cuba, 



t. 4 ; Dum. & Bib. Erp. Gen. iii. 97. 

 C. (Palinia) rhombifer, Gray, Cat. B.M. 



The upper surface of the fore-arms and thighs covered with 

 convex keeled scales ; the outer edge of the legs and feet with 

 a series of very elongated scales, forming only a slight fringe; 

 the toes short, scarcely webbed. 



In the British Museum there is a nearly adult stuffed specimen, 

 received from M. Ramon de la Sagra, and two young specimens 

 sent from Cuba by Mr. "IV. S. Macleay. The young specimens 

 (in spirit) are pale brown, with small dots on the head, and a 

 dark spot on the middle of many of the dorsal scales. Tail sub- 

 tessellated, with square brown spots. 



C. planirostris, Graves (C. Gravesii, Bory), is only described 

 from an old specimen, in a very bad state, in the Museum of 

 Bordeaux. The description and figure agree with those of P. 

 rhombifer in almost every respect, except that the hind toes are 



