150 DR. J. E. GRAYS SYNOPSIS OF THE SPECIES 
the twelve specimens which they say they procured. They have named the adult 
specimen in the Paris Museum Crocodilus biporcatus. 
In the ‘ Annals and Magazine of Natural History,’ vol. xviii. t. 7, Dr. Falconer figures 
the skull of a Crocodile under the name of C. marginatus, which is in the Belfast Museum. 
It is said to have been brought from Sierra Leone; but I think that this must be a 
mistake: it is not like the skull of any Crocodile I have seen from West Africa, and it 
is not a bad representation of the skull of a half-grown Bombifrons indicus from India. 
Can the habitat be a mistake ? perhaps the habitat was only intended for the first-de- 
scribed species, Cataphractus mecistops, for which it is the true locality. 
A skull of Crocodilus vulgaris is described in Professor Owen’s ‘Catalogue of Os- 
teological Specimens in the Museum of the College of Surgeons’ under the name of 
Crocodilus acutus, p. 157. n. 715. 
5. Moumnia. « 
Face elongate ; forehead swollen, convex, especially in the adult; orbits without any 
anterior ridge. Nuchal plates two or four, small. Cervical disk rhombic, of six 
plates, the side plates generally small.“ The legs fringed with a series of triangular 
elongate scales. Toes webbed. Scales of the forearm and thigh thin, smooth. 
Muzzle oblong, elongate, slender, with a swollen convexity on the middle of the 
face before the eyes. Nostril not separated by a long ridge: the internal nostril pos- 
terior, with an oblong sloping opening; the intermaxillary suture produced behind 
between the ends of the maxille. 
Molinia, Gray. Ann. & Mag. N. H. 3rd series, x. 272. 
* Face slender. Dorsal plates irregular ; the central series small, keeled ; lateral 
scattered, strongly keeled. Nasal bones produced to the nostrils. Molinia. 
1. Monimia Americana (American Crocodile). 
Crocodilus americanus (Plumieri), Schn. Amph. ii. 23. Gray, Cat. Tort. & Croc. &c. B. M. 60. 
Crocodilus acutus, Geoff. Ann. Mus. ii. 53, t. 57. f. 1. Cuvier, Oss. Foss. v. t. 1. f.3 & 14, t.2. £.5. 
Gray, Syn. 60. Dum. & Bib. Erp. Gén. iii. 120. Owen, Cat. Osteol. Spec. Mus. Col. Surg. 
157. n. 711, 712, 714, 716; Reptiles of the London Clay, t. 25. f.10. Briihl, Skelet. Krokod. 
t. 8:& 9, t. 10). 17. 
Crocodilus americanus (acutus, Cuv.), Huxley, Journ. Proc. Linn. Soe. iv. 11, 1859. 
Molinia americana, Gray, Ann. & Mag. N. H. 3 ser. x. 272. 
’? Crocodilus biscutatus (part.), Cuvier, Oss. Foss. x. t. 2. f. 6. Tiedem. Amph. t. 12. 
Crocodilus de St. Domingue, Geoff. Ann. du Mus. ii. 53, t. 27. f. 1. 
Hab. Tropical America. Cuba (W. §. Macleay); Jamaica (B.M.); West Ecuador 
Nicaragua (Fraser ; Richardson); West coast of America (Belcher); St. Domingo (Cuvier); 
Guatemala (Salvin). 
The specimens in the British Museum vary in length from 19 to 103 inches; and the 
skulls show that they grow to a larger size. 
