60 CROCODILUS. 



productiore sub-c^'lindrico, scutis eporosis, dorsi subrotundis 

 sexfariam dispositis, nuchse 4, cervicis 6. 



Croc, iiitermedlus. Graves Ann. Gen. Sci. ii. 348. ^roc. 

 Journei, Bory St. V. Diet. Class. H. N. 



Hab. in America? Mus. Bordeaux. 



Muzzle produced sub-cylindrical ; back with 6 series of oval 

 scales, and a distant series along each side ; nuchal plates 4, 

 cervical 6, placed in a round group. Scales all poreless. 

 Length 8-i feet. Allied to the Gavials. 



8. Croc, acutus. [American Crocodile). Rostro producto 

 ad basin convexo, scutis dorsi intermediis quadratis, exteri- 

 oribus irregularibus subsparsis, nuchee 4, cervicis 6. 



Croc, acutus, Cuv. Ann. Mus. x. et Os. Fos. v. t. 1, f. 3, 

 14, et t. 2. f. 5, Geoff. Ann. Mus. ii. t. 37, Seba, t. 106 ? 

 (mala) t. 104, f. 1—9. 



Hab. in Tnsulis Indiee Occidentalis. 



Muzzle produced, convex at the base, slightly keeled ; back 

 with 4 central series of scales, the scales of the outer rows 

 irregular and strongly keeled. The nuchal plates 4, small; 

 the cervical plates 6, in a lozenge -shaped group. 



Bartram and M. Descourtilz, Voy. d'un Naturaliste, have 

 given the history of the manners of this species. 



Species dubice. 



Croc. Siamensis, [Siam Crocodile.) Crista elevata biden- 

 tata in vertice, scutis cervicis 6. 



Croc. Siamensis, Schn. from a bad figure by Perrault, Mem. 

 Acad. Sci. avant 1699, t. 64, cop. E. M. t. 1, f. 3, et Faujas. 

 Hist. M.S. P.t.43, et Croc. galeatus,C\iv.Os.Yos.v.\,.\,i.9. 



Hab. in Siam. 



Most allied to Croc, vulgaris, but differs in the central 

 occipital crest. 



Croc, pentonyx, Sch. is an imaginary species. Croc, 

 terrestris, Laurenti, is from a bad figure of Seba. 



Crocodili Fossiles. Cuv. Os. Fos. v. 161, &c. 



a. Croc. Brongniartii, n. 



Croc, de Muedon, Cuv. Os. Fos. v. 161, t. 6, f. 9, (dens) 



A fossil tooth found by M. Brongniart. 



