140 DR. J. E. GRAY'S SYNOPSIS OF THE SPECIES 



1. BoMBiFEONS iNDicus. (The Muggar.) (Plate XXXI., figs. 1, 2, 3.) 

 The intermaxillary short, nearly semicircular. 

 Crocodilus vulgaris, var. indicus, Gray, Syn. Rept. 58, 1831 ! 

 Crocodilus duhius, (Jeofif. Ann. du Mus. xii. 132? 

 Crocodilus suchus, var. D., Dum. Enc. Metli. Rept. 27. 

 Crocodilus palustris, Lesson, Belanger, Voy. 305. Gray, Cat. Tort. & Croc. B. M. 62 (young). 



Owen, Cat. Osteol. Mus. Coll. Surg. 164 & 752 ! Giinther, Rept. B. Ind. t. 8. f. a. 

 Crocodilus bombifrons, Gray, Cat. Tortoises & Crocodiles &c. B. M. 59, 1844 (adult) ! 

 Crocodilus bombifrons {palustris 't), Huxley, Proc. Linn. Soc. Zool. iv. 13! 1859. 

 ('rocodilus biporcatus, Cautley, Asiat. Research, xix. t. 3. f. I. p. 3 ! (not Cuvier). 

 Crocodilus trigonops, Gray, Cat. Tort. & Croc. B. M. 62, 1844 (young) ! 

 Bombifrons trigonops, Gray, Ann. & Mag. N. H. 3rd series, x. 269 ! 

 Crocodilus vulgaris, var. B. Dumer. & Bibrou, Erp. Gen. iv. 108. 

 Crocodilus rhombifer, Owen, Cat. Osteol. Mus. Coll. Surg. 164, n. 752 ! (not Cuvier) . 

 Crocodilus ? Owen, Cat. Osteol. Mus. Col. Surg. 159, n. 726 ! 



Hab. India: Ga,nges (Br. Sayer) ; Mudrsis (Jerdon) ; Ceylon (Kelaart). 



Tlie dorsal shields in four series, all equally keeled, with two irregular series of 

 plates on the sides. The shields are often nearly of the same form and size ; but 

 sometimes there are larger and broader shields intermixed in and deranging the series, 

 and at other times the whole vertebral series is formed of wider shields. 



This species has generally been confounded with Ooj)hoJis biporcatus and Crocodilus 

 vulgaris. 



The face of the younger specimen is rugulose and depressed, with a deep pit on the 

 sides over the eighth and ninth teeth ; there are two arched ridges on each side behind 

 the nostril, and some rugosities in front of the orbits. In the older skull the face is 

 very convex and rounded, rugose, with some more or less distinct rugosities in front 

 of the orbits, but not the distinct longitudinal ridge so characteristic of Oojjholis porosus. 



Professor Owen described the peculiar form of the premaxillary in a skull in the 

 College of Surgeons Museum, sent from Bengal by Dr. Wallich ; but he refers the skull 

 to Crododilus rhombifer of Cuvier, which is an American species. 



The smallest specimen in the British Museum is 19 inches, and the largest nearly 

 10 feet long; there are skulls showing that it grows to a much larger size. The 

 specimen I described as C. trigonalis is 24| inches long. 



In my Catalogue of the Tortoises and Crocodiles in the British Museum, published 

 in 1844, 1 described it, from two adult skulls from India of 18 and 20 inches long, as a 

 new species, which I called Crocodilus bombifrons, pointing out the straightness of the 

 suture between the intermaxillary and the maxillary bones. I observed that I had 

 seen in the Paris Museum a large specimen which had been described by Dumeril and 

 Bibron as an adult of Crocodilus biporcattis, which appeared to belong to this species, 

 stating that it was immediately known from C. porosiis by the breadth and convexity of 

 the face. 



