CROCODILES. 61 



**** Dorsal plates square, as broad as long, subequal, the smaller 

 plates on the sides irregular, in two oblique ascending series. 

 Nuchal shields 4 or 6, distinct. Muzzle triangular, with 2 more 

 or less distinct short irregular ridges in front of the orbit. Cro- 

 codilus. 



The Margined Crocodile. Crocodilus marginatus, Geoff. 

 Croc. Egypt. 165. C. vulgaris var. Gray, Syn. i. 58. Dum.etBib. 

 E. G. iii. 110. 



Head elongate, oblong, triangular, rather convex, rounded, 

 sides slightly swollen behind the notch, half as long again as the 

 width of the head behind ; muzzle at the first notch as wide as the 

 forehead, and at the 9th tooth as wide as two thirds the distance 

 between the eyes and nostrils ; forehead deeply concave, with the 

 sides high, prominent and nearly parallel ; dorsal plates very 

 strongly keeled. 



a. Stuffed, adult. Length 9 feet 10 inches. South Africa. Pre- 



sented by the Earl of Derby. 



b. Stuffed, adult. Length 15 feet. South Africa. 



c. Stuffed, adult. Length 14 feet. South Africa. 



The Egyptian Crocodile. Crocodilus vulgaris, Cuv. Ann. 

 Mus. x. 40, t.l,f. 5—12, t. 2,/. 7. Oss. Fos. v. t.\,f. 5, 12, t. 2, 

 /. 7. Tiedem. Amph. t. 8. Gray, Syn. 57. Dum. ct Bib. E. G. iii. 

 104. Lacerta Crocodilus, Linn. S. N. C. Champses, Bory, Diet. 

 Class. H. N. v. 108. C. lacunosus, Geoff. C. complanatus, Geoff. 



Head elongate, triangular, flat, smoothish above, narrow, ta- 

 pering at the sides, nearly twice as long as the width of the head 

 behind ; muzzle at the notch nearly two thirds the width of the 

 forehead, at the 9th tooth as wide as half the distance between 

 the eyes and nostrils ; forehead flat, with nearly parallel sides. 



a. Adult, stuffed, bad state. Nuchal plates 6, cervical S, the 4 in 

 front small. Length 120 inches. N. Africa, Thebes. Pre- 

 sented by Sir Edwin Pearson. 



6. Adult, stuffed, like a. Length 105 inches. N. Africa. 



c. Half grown, stuffed, like a. Length 56 inches. N. Africa, 



C. vulgaris, Bibron, MS. 



d. Half grown, stuffed. Nuchal plates 4, cervical 8, in 3 bands, 

 hinder pair small. Length 60 inches. N. Africa. 



e. g. Young, stuffed. Nuchal plates 4, cervical 6, in 2 bands, with 



a small one on the right side of the front. Length 40-41 inch- 

 es. N. Africa ? 



/. Young, stuffed. Nuchal plates 4, cervical 8. Length 40 inch- 

 es. N. Africa. 



h. Young, stuffed. Nuchal plates 4, cervical 6, front of the dor- 

 sal disk rather narrow. Length 37 inches. N. Africa. Pre- 

 sented by Sir I. Gardnor Wilkinson. 



G 



