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CYSTIGNATHUS NIGRITUS.—Leconte. 
Plate XXVI. 
Cuaracrers. Head clongated, snout rather pointed, upper lip white; body 
above speckled with small white granulations; back olive-brown, with a tinge of 
yellow, and an interrupted black vertebral line; beneath whitish, granulated; 
extremities ash coloured above, with several transverse dusky bars or oblong 
blotches. 
Synonymes. Rana nigrita, Leconte, Ann. Lyc. Nat. Hist. N. Y., vol. i. p. 282. 
Rana nigrita, Harlan, Med. and Phys. Res., p. 105. 
Description. The head is elongated, and ash coloured above, with the snout 
rather pointed. The nostrils are lateral, and nearer the snout than the orbits. 
The eyes are large and prominent, the pupil black, the iris golden above and 
grey below. The mouth is rather large, and the palate is armed with two thick 
groups of minute teeth, placed between the posterior nares and disposed a little 
“en chevron.” The tympanum is dusky and very small. The upper jaw is 
yellowish-white, which colour is continued below the anterior extremities; above 
this is an irregular black blotch, beginning near the snout, including the greater 
part of the eye, and reaching to the shoulder. 
The body is slender, olive brown above, with a tinge of yellow, and an 
interrupted black vertebral line from the snout to the rump. The abdomen is 
yellowish-white, and granulated posteriorly. 
The anterior extremities are slender, and coloured above like the back, with 
