1913.] NATURAL SCIENCES OF PHILADELPHIA. 167 



slightly convex. Tympanum moderate, rounded, about f orbital 

 length. 



Skin largely smooth above, and perfectly so on sides of both trunk 

 and limbs as well as entire lower portions. On back, between eyes 

 and vent, a number of minute obsolete wide-set granulations. 



Limbs slender. Fingers free and toes all completely webbed. 

 First finger longer than second, subequal with third, with large 

 tubercle or pollex basally inside. Tubercles on fingers and toes not 

 very conspicuous. Toes slender, and fourth much longest. Cuneate 

 tubercle at base of first toe well developed, though much smaller 

 than that of first finger. Tarsal fold very pronounced along inner 

 edge of tarsus. 



Color in alcohol with back and upper surface of head deep olive- 

 brown, marked obscurely with some rather wide-set, ill-defined 

 dusky spots. Lips and tympanum browni, and throat much paler 

 or lighter, also uniform. Fore limbs brownish, paler l)elow, and 

 upper surfaces with obscure dusky marks as streaks or blotches. 

 From elbow to palm, posteriorly, dark streak well defined. Hind 

 limbs brownish above, pale below, and both surfaces mottled with 

 rather coarse dark reticulations, most distinct or blackish along 

 hind femoral regions. Feet also variegated with dusky. Sides of 

 trunk with pale olive tint, with a few obscure dusky spots. Belly 

 pale like throat. 



Length 43 mm. 



Type, No. 18,051, A. N. S. P. Bucay, Province of Guayas, Western 

 Ecuador. July, 1911. S. N. Rhoads. 



Nos. 18,073, 18,080, and 18,082 to 18,084, paratypes, same data. 



This subspecies is closely related to Ranula hrevipalmata Cope,^^ 

 figured for comparison as Plate VIII, lower figure, but differs in several 

 characters, such as the smaller tympanum and much shorter snout. 

 It agrees, however, in the coloration, especially in not having the 

 limbs transversely barred with darker above. For comparison I 

 have had Cope's type. 



According to Mr. Rhoads, it lives about springs, and recalls the 

 habits of our spring frog (Rana clamato). 



A tadpole, with the same data as the examples from Bucay, is 

 likely identical. 



(Named for Mr. S. N. Rhoads.) 



Proc. Acad. Nat. Sci. Phila., 1874, p. 131. Nauta. 

 12 



