a. ALLIGATOR.— 6. CAIMAN. 291 
on the middle of the body. Each ventral shield with a thin ossifica- 
tion, Fingers free. End of tail little serrate above, scarcely com- 
pressed. Colour dark brown, with vertical yellow bars on the sides 
and tail, the former very irregular; chin, throat, and lips yellow, 
without spots. 
Total length 1 metre 30 centim. 
Hab. ? 
3. Alligator sinensis. 
Alligator sinensis, Fauvel, Journ. N. China Br, As. Soc. xiii. p. 1, 
pl. — (1879) ; Vaillant, Ann. Sc. Nat. (6) ix. art. 8 (1880); Boett- 
ger, Ber, Offend. Ver. Naturk. 1838, p. 111. 
17 or 18 upper and 18 or 19 lower teeth on each side. Head 
nearly once and a half as long as broad; lateral outlines of snout 
converging towards the end, which is obtusely rounded; upper eye- 
lid entirely bony. Three pairs of large nuchal scutes, in contact 
on the median line; two small, round, isolated scutes in front of 
the large nuchals, and between them and the skull a semicircular 
row of six conical shields. 17 transverse series of dorsal scutes, the 
broadest of which are composed of six scutes. Ventrals with a thin 
ossification. Fingers free, toes half-webbed. Tail strongly com- 
pressed and crested posteriorly. Greenish black above, speckled and 
vermiculate with yellow ; underparts greyish. 
Total length 1 metre 74 centim. 
Yang-tse-Kiang. 
6. CAIMAN. 
Alligator, part., Cuvier, Ann. Mus. x. p. 30 (1807); Dum. § Bibr. iii. 
p. 63 (1856): Strauch, Syn. Crocod. p. 9 (1866). 
Caiman, Spi, Lacert. Bras. p. 3 (1825); Gray, Cat. Tort. §c. p. 66 
(1844); Huxley, Journ, Linn, Soe, iv. p. 3 (1860); Gray, Cat. Sh. 
Rept. ii. p. 27 (1872). 
Jacaretinga, Spa, d. ec. p. 1. 
Champsa, part., MWagler, Syst. Amph. p. 140 (1830). 
Jacare, Gray, Cat. Tort. p.64; Huxley, l. c. p.4; Gray, Cat. Sh, 
Rept. i. p. 25. 
Melanosuchus, Gray, Ann. § Mag. N. H. (3) x. p. 328 (1862), 
Cynosuchus, Gray, 1. c. 
Paleosuchus, Gray, 1. c. p. 330. 
Avomosuchus, Gray, @. c. 
18 to 20 upper and 17 to 22 lower teeth on each side; fourth 
maxillary tooth longest ; fourth mandibular tooth fitting into a pit 
in the upper jaw. Snout moderately long, or short; vo bony nasal 
septum ; nasal bones extending to the nasal aperture; supratemporal 
fossee very small or absent. Splenial bones not entering the man- 
dibular symphysis, which extends to the fourth or fifth tooth. A 
dorsal shield formed of six or more longitudinal series of articulated, 
keeled, bony scutes; a ventral armour of overlapping bony scutes, 
each scute formed of two distinct portions united by suture. 
Central and South America. 
x 
