7^ CADUCIBRANCHIATA. 



over four costal furrows ; mucous pores numerous ; tail 

 oval, swollen at base. 



Length 3.23 inches. * Breadth of head .28 inches. 



Tail 1.57 << 

 Habitat Nauta. 



7. Batrachoseps, Bonaparte. 



Vomerine teeth in a transverse, medially interrupted, 

 row behind the inner nares ; sphenoidals in two elongated 

 groups, not touching the former; tongue boletoid or ad- 

 herent towards the front ; praemaxillaries united into a 

 single piece ; head . short ; body and tail slender ; toes 

 elongated, four in front and four behind. 



Color above brown or yellowish, with black dots, lines 

 or bands, (a) 



Color above uniform brown, (b) 



a. Tongue attached in front. . ,B. attenuatus. (i) 



a. Tongue fully boletoid. .B. quadridigitatus. (4) 



b. Toes palmate B. Pacificus. (3) 



b. Toes free and rudimentary. B. nigriventris. (2) 



