28 KEPTILES. 



V. Large specimen : skin. South America. From Mr. Stevens's 

 Collection. 



IV. Yoimg : not good state. South America. 



■r. Adult: skeleton. Brazil. 



y. Adult : female. South America. From a specimen of the Old 

 Collection. 



z. Large specimen : skeleton. Brazil. From M. Braconier's Col- 

 lection. 



2. Cystignathus caliginosus. 



Leptodactylus caliginosus, Glranl, Proc. Ac. Nat. Sc. Philad. 1853, 

 p. 422. 



Toes fringed on each side ; metatarsus with two tubercles ; tym- 

 panum distinct ; vomerine teeth in two slightly arched series behind 

 the inner nostrils ; skin smooth, with a few scattered flat small 

 warts. Above browTi with some obsolete darker spots ; on the occiput 

 a large angular dark blotch. 



a-c. Adult male and female. South America. From the Mus. 



Guihhng as Rana gregavia. 

 d-g. Adult and young. South America. Mus. Guilding. 



3. Cystignathus fuscus. 



Rana fiisca, ScJuiei'd. Hist. Amph. p. 130. 



tj-phonia, Dmul. Rain. p. 55. pi. 56. f. 3, 4. 



virginica, Men: (not Lata-.) p. 177. 



Cystignathus typlioniiis, I}um. ^ Bihr. p. 402. 



Toes not fringed ; tympanimi distinct ; vomerine teeth in two 

 arches, each very convex. 



a. Adult. Pemambuco. Presented by J. P. G. Smith, Esq. 

 5. Adult: stuffed. Antigua. 



c. Adult : stuffed. South America. From the Haslar Collection. 



d. Large specimen : stuffed. South America. From Mr. Argent's 



Collection. 



e. Adiilt : skin. Soiith America. 



/. Half-grown. South America. From Mr. MacGilHvray's Collection. 



4. Cystignathus gracilis. 



Cystignathus gracilis. Dam. ^- Bibr. p. 406; D'Orbi(jny, Voy. Amer. 

 3Ierid. t. 13. f. 5-7. 



Tympanum distinct ; vomerine teeth in a long, narrow cross scries, 

 scarcely internipted in the middle, and placed behind the internal 

 nostrils ; each part shghtly convex. Snout conical, pointed ; upper 

 jaw produced far beyond the lower. A white dorsal band. 



((-c. Adult males. Para. Presented by 11. Graham, Esq. 

 d. Adidt female. St. Marthe. 



