13. LEPTODACTYLUS. 241 
5. Leptodactylus gracilis. 
Cystignathus gracilis, Dum. § Bibr. p. 406; D’ Orb. Voy. Ameér, mér., 
Rept. p. 10, pl. 15, f. 5-7. 
Leptodactylus gracilis, Espada, Viaj. Pacif., Vertebr. p..44. 
Tongue subcordiform. Vomerine teeth in a long, scarcely inter- 
rupted series behind the choane. Snout pointed; tympanum two 
thirds the width of the eye. Hind limbs and toes very slender ; 
the latter not fringed ; two metatarsal tubercles. Brownish above, 
longitudinally striped with black ; hind limbs cross-barred. 
Montevideo. 
6. Leptodactylus fragilis. 
Cystignathus fragilis, Brocchi, Bull. Soc. Philom. (7) i. p. 182. 
gracilis, Cope, Proc. Amer. Philos. Soc. xviii. 1879, p. 269. 
Leptodactylus fragilis, Brocchi, Miss. Sc. Mex., Batr. p. 19, pl. 5. f. 2. 
Tongue oblong, slightly nicked behind. Vomerine teeth in two 
arched series behind the choane. Tympanum nearly as large as the 
eye. Limbs and toes very slender; subarticular tubercles much 
developed ; two metatarsal tubercles. Flanks with two series of 
small tubercles, and a small glandular fold between them. Brownish 
above, with rather regular black spots ; two triangular spots between 
the eyes; a black stripe from the tip of the snout to the eye; hind 
limbs cross-barred. 
Tehuantepec. 
7. Leptodactylus labrosus. 
Leptodactylus labrosus, Espada, Via). Pacif., Vertebr. p. 36. 
Tongue oval, slightly nicked behind. Yomerine teeth in two 
arched series behind the choane. Snout pointed, very prominent. 
First finger longer than second; toes not fringed; subarticular 
tubercles well developed ; two small metatarsal tubercles. The hind 
limb being carried forwards along the body, the tarso-metatarsal 
articulation reaches the tip of the snout. Two glandular lateral 
folds on each side of the back, the lower ending in a large, irregular, 
flat porous gland on the groin; a fold from the eye to the shoulder ; 
sides of body and upper eyelids tubercular ; a ventral discoidal fold. 
Brown above ; a dark streak from the tip of the snout through the 
eye to the shoulder; upper lip with dark triangular spots; a dark 
triangular spot between the eyes ; limbs cross-barred. 
Ecuador. 
8. Leptodactylus pentadactylus. 
Cystignathus fuscus, Giinth. Cat. p. 22. 
Pleurodema labyrinthicum, Giinth, 1. c. p. 31. 
Seba, i. pl. 76. f. 1. 
Rana pentadactyla, Law. Syn. Rept. p. 32. 
ocellata, Schnetd. Hist. Amph. i. p. 117; Daud. Rain. p. G1, 
pl. 19, and Rept. viii. p. 118; Gravenh. Delic. p. 42. 
gigas, Spi, Ran. p. 25, pl. 1; Peters, Mon. Berl. Ac. 1872, p. 197. 
—— labyrinthica, Spiv, lc. p. 51, pl. 7. £.1,23 Peters, lc. 
R 
