42 KEPTILES. 



3. ALSOLES. 



Head convex, cro-rni smooth. Tongue acutely produced in front, 

 rounded and free behind. Palcatine teeth in two small close patches 

 between the intt-rior nostrils. Fingers four, short, webbed at the base 

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

 (BeU.) — Tympanum, ca\'um tympanicum, tuba custachii, wanting. 

 Diapophysis of sacral vertebra appears to be a little dilated towards 

 the end. 



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



1. Alsodes monticola. 



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

 Green, sides yellowish brown. In spirits smoky brown. 



(t. Bad state. Island of Inchy, Chonos Archipelago. Presented by 

 Charles Darwin, Esq. 



The follo^ving genus is knowai to me only by Wicgmann's descrip- 

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

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

 the Berlin Museum ; and, as in Ahodes 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 beliind. No palatine teeth. Fingers four, short, 

 with a ruihmentary membrane between ; toes webbed. 



Telniatobius, Wieynuum, Nov. Act. 1835, p. 262. 

 1. Telniatobius peruvianus. 



Wicymann, 1. 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. Peni. 



Section III. Brachycephalina. 



0. oxYDACTYLA without maxillaiT teeth and with impcrleelly de- 

 veloped ear. 



Fam. 1. PHRYNISCID^. 



Bkacuycei'Ualina with we])bed t<xs. with the pioccbscs of sacral 

 vertebra dilated, and without paratoids. 



One genus. Tropical America. 



