3. CROCODILUS. 283 



(). Crocodilus niloticiis. 



Lacerta crocodilus, part., Lin». S. N. i. p. .3r>9 (1700). 



Crocodilus niloticus, Laitr. Si/ii. liept. p. 53 (17(J8) ; iJaud. licpt. 



ii. p. .'3()7 (lf?02). 

 ? Crocodilus africanus, Laur. I. v. p. o4. 

 Crocodilus vulgaris, Cuv. Aim. Mus. x. p. 40, pis. i. & ii. (1807) ; 



Geoff): t. c. p. &2, pi. iii., and Dcscr. E(it/pte, i. p. 18.^, pi. ii. 



(1820); Tioilem., 0pp., ^- Lilt. Nat. Amph. p. 08, pi. viii. (I8l7); 



Gray, Cat. Tort. i^-c. p. 01 (1844) ; JIuxley, Journ. Linn. Soc, iv. 



p. (I860) ; Strauch, Syn. Crocod. pp. 43 & 00 (18()(')) ; Gray, 



Trans. Zool. Sue. vi. p. 147, figs. (18(J7), fmd Cat. >Sh. licpt. ii. 



p. 15(1872); Boetty. Bcr. Senck. Gcs. 1870-80, p. 100 (1880); 



l\'ters, Jii'ise n. Mossainb. iii. p. 19, pi. iv. iig. 1 (1882). 



suclius, Geoff r. II. cc. pp. 84, 243. 

 _ ^ p.. 



chamses, Bory de St. Vine. Diet. Class. d'JIist. Nat. v. p. 105 

 (1824). _ 



marginatus, Geoffr. Deser. Eyypte, p. 200 ; Gray, Cat. Tort. 



Sic. p. 01. 



lacunosus, Geoffr. I. c. p. 201. 



complanatus, Geoffr. I. e. p. 20."). 



vulgaris, part., Ihim. i^- Bihr. iii. p. 104 (1830). 



biuuensis, Bailcie, I'roc. Zool. Sue. 1857, p. 48. 



niadagascaricusis, Grandid. Ann. Se. Nat. xv. art. 20 (1872) ; 



Gray, Proc. Zool. Soc. 1874, p. 145, pi. xxiii. ; Boctty. Aftli. Senek. 



Ges. xi. p. 27, pi. — . fig. (1877), and xii. p. 480 (1881). 



18 or 10 upper and 15 lower teeth on each side. Snout variable 

 in length, once and two thirds to twice as long as broad at tlie 

 base ; head rough above, but without any marked ridges ; mandi- 

 bular symphysis extending to the fourth or fifth tooth ; pnumuxillo- 

 maxillary suture, on the palate, directed backwards or W-shapcd ; 

 nasal bones separating the prscmaxillarics above. Four largo 

 nuchals forming a square, usually with a smaller one on each side, 

 sometimes followed by other smaller nuchals and 1 hus subcoiitinuous 

 with the dorsal shield ; four or six nuchals in a transverse series 

 behind the occiput. Dorsal .scutes in 10 or 17 transverse and six 

 or eight longitudinal series ; sides with scattered smaller scutes. 

 Eingers webbed at the base ; outer toes extensively webbed. A 

 serrated fringe on the outer edge of the leg ; scales on the limbs 

 feebly keeled or smooth. Adult dark olive above ; young pale 

 olive, speckled or vermiculate with black, and with scattered largo 

 black spots. 



The largest specimen in the Collection measures 4| metres. 



Africa, from the Nile and the Senegal to the Cape of Good Hope ; 

 Syria ; Madagascar. 



E£rvt)t. 



Sir J. Wilkinson [P.]. 



W. GUbey, Esq. [P.]. 



