93 



RANA NIGRITA.— Lecon/e. 



Plate XIX. 



Characters. Head elongated, snout 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 colour above, with transverse dusky bars or oblong blotches. Length, \\ 

 inches. 



Synontmes. Rana nigrita, Leconte, Ann. Lye. Nat. Hist. N. Y., vol. i. p. 2S2. 

 Raiia nigrita, HarL, Med. and Phys. Res., p. 105. 



Description. The head is elongated, and ash colour above, with the snout 

 rather pointed. The nostrils are lateral, and nearer the mouth than the orbits. 

 The eyes are large and prominent, the pupil black; the iris golden above and grey 

 below. 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, and 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 

 spots and transverse bars of black, and dusky yellowish-white below; there are 

 four long and delicate fingers. The posterior extremities are very long, and 

 coloured both above and below like the anterior; there are five toes, but slightly 

 palmated. 



