42 REPTILES. 



3. ALSODES. 



Head convex, crown smooth. Tongue acutely produced in front, 

 rounded and free behind. Palatine teeth in two smaU close patches 

 between the interior nostrils. Fingers four, short, webbed at the base 

 (inner toe broad, fringed). Toes webbed to the tliird phalange. 

 (Bell.) — Tympanum, cavum tympanicum, tuba eustachii, wanting. 

 Diapophysis of sacral vertebra appears to be a little dilated towards 

 the end. 



Alsodes, Bell, Zool. of the Beagle, p. 41. 



1. Alsodes monticola. 



Bell, I. c. pi. 18. f. 3. 



Green, sides yellowish brown. In spirits smoky brown. 



«. Bad state. Island of Inchy, Chonos Archipelago. Presented by 

 Charles Darwin, Esq. 



The following genus is known to me only by Wiegmann's descrip- 

 tion and by letters from my friend. Dr. E. v. Martens ; according to 

 the latter, the vomerine teeth are certainly absent in the specimen in 

 the Berlin Museum ; and, as in Alsodes monticola, the inner toe is 

 fringed, which I consider to be a sexual character. 



4. TELMATOBIUS. 



Head short, with flat crown. Tongue oval, not pointed in front, 

 rounded and free behind. No palatine teeth. Fingers four, short, 

 with a rudimentary membrane between ; toes webbed. 



Telmatobius, Wiegmann, Nov. Act. 1835, p. 262. 



1. Telmatobius peruvianus. 

 Wiegmann, I. c. t. 22. f. 2. 

 Above with many very small horny warts. Above brown, with 

 a darker longitudinal band, anteriorly crossed by two transverse 

 streaks. Peru. 



Section III, Brachycephalina. 



0. oxYDACTYLA without maxillary teeth and Avith imporloctly de- 

 veloped ear. 



Fam. 1. PHRYNISCID^. 



BRAouYCErnALiNA Avith webbed toes, with the processes of sacral 

 vertebrii dilated, and without paratoids. 



One genus. Tropical America. 



