13. LEPTODAClYLlrS. 241 



5. Leptodactylus gracilis. 



Cystiguatliu.s gracilis, Bum. S}- Bibr. p. 406 ; D'Orh. Vvt/. Aiiicr. uicr., 



Sept. p. 10, pi. 13. f. 5-7. 

 Leptodactylus gracilis, E&pada, Viaj. Pacif,, Vertebr. p. 44, 



Tongue subcordiform. Vomerine teeth in a long, scarcely inter- 

 rupted series behind the choan^e. 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. 



Cystignatlius fragilis, Brocchi, Bull Soc. Philom. (7) i. p. 182. 



gracilis. Cope, Proc. Amer. Philos. Soc. xviii. 1879, p, 269. 



Leptodactflus fragilis, Brocchi, Miss. Sc. Mex., Batr. p. 19, pi. 5. f. 2. 



Tongue oblong, slightly nicked behind. Yomerine teeth in two 

 arched series behind the choana?. 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 lahrosus. 

 Leptodactylus labrosus, Espcula, Viaj. Pacif., Vertebr. p. 36. 



Tongue oval, slightly nicked behind. Yomerine teeth iu two 

 arched series behind the choanoe. 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, G'dnth. Cat. p. 28. 

 Pleurodema labyrintbicum, Giintli. I. c. p. 31. 

 Seba, 1. pi. 75. f. 1. 

 Rana pentadactj-la, Laur. Stjn. Rept. p. 32. 



ocellata, tSchncid. Hist. Amph. i. p. 117; Baud. Rain. p. 6J, 



pi. 19, and Rept. viii. p. 118; Gravenh. Belie, p. 42. 



gigas, Spix^ Ran. p. 25, pi. 1 ; Peters, Mon. Berl. Ac. 1872, p. 197. 



labyrinthica, Spix, I. c. p. 31, pi. 7. f. 1, 2 ; Peters, I. c. 



R 



