3. CROCODILUS. 279 
1. Crocodilus cataphractus. 
Crocodilus cataphractus, Cuvier, Ossem, Foss. vy. pt. 2, p. 58, pl. v. 
figs. 1 & 2 (1824); Dum. § Bibr. iii. p. 126 (1836); A. Dum. 
Arch. Mus. x. p. 171, pl. xiv. fig. 2 (1860); Strauch, Syn. 
Crocod, pp. 60 & 106 (1866), and Bull. Ac. St. Pétersh, xiii. p. 58 
(1869) ; Giebel, Zeitschr. ges. Naturw. 1. p. 105, pls. vii.-x. (1877). 
leptorhynchus, Bennett, Proc. Zool. Soc. 1835, p. 129; A. Dum. 
noe Rept. p. 29 (1851), and Arch, Mus, x. p. 171, pl. xiv. 
a, . 
Mecistops bennettii, Gray, Cat. Tort. Se. p. 57 (1844). 
cataphractus, Gray, 1. c. p. 58; Hurley, Journ. Linn, Soc. iv. 
p. 16 (1860) ; Gray, Trans. Zool. Soe. vi. p. 157, pl. xxxii. figs, 1-3 
(1867), and Cat. Sh. Rept. ii. p. 22 (1872). 
17 or 18 upper teeth on each side. Snout very slender, Gavial- 
like, twice and two thirds to thrice and one third as long as broad 
at the base (7?. ¢. on a line with the anterior borders of the orbits), 
without distinct ridges; mandibular symphysis long, extending to 
the seventh or eighth tooth ; preemaxillo-maxillary suture, on the 
palate, directed backwards; maxillaries forming a median suture 
above, behind the nasal opening. ‘Two pairs of large nuchal scutes, 
continuous or subcontinuous with the dorsals, which are in 18 or 
19 transverse rows, the fourth (or fifth) to fifteenth of which are 
composed of six scutes; sides with large, keeled scutes; gular and 
ventral scutes bony in the adult. A slight web between the second 
and third fingers; outer toes two-thirds webbed. A serrated fringe 
on the outer edge of the leg; scales on the limbs strongly keeled. 
Blackish olive above, yellowish inferiorly ; young pale olive, with 
large black spots. 
The largest specimen in the Collection measures 2 metres. 
West Africa, from the Senegal to the Gaboon. 
a, Ad., stffd. Gambia. Mr. Rendall [C.]. 
b. Her., skull. Sierra Leone. 
ec. Yg., spir. Old Calabar. A. Murray, Esq. [P. ]. 
d. Ye., spir. Old Calabar. W. Carruthers, Esq. { P.]. 
e. Ye., stffd. Fernando Po. Zoological Society. (Type 
of C. leptorhynchus.) 
tg, h. Her. & yg. W. Africa. 
stfid. 
7, Ad., skull. W. Africa. Dy. B. Baikie [C.]. 
k, Ad., skull. W. Africa. 
2. Crocodilus johnstonii. 
Crocodilus johnsoni *, Krefft, Proc. Zool. Soc. 18738, p. 335, 
Philas johnstoni, Gray, Proc. Zool. Soc, 1874, p. 177, pl. xxvii. 
19 upper teeth on each side. Snout very slender, Gavial-like, 
about three times as long as broad at the base, without distinct 
ridges; mandibular symphysis long, extending to the sixth tooth ; 
maxillaries forming a median suture above, behind the nasal opening. 
* A misprint for johnstont. 
