6 University of Michigan 



Cana (U. S. N. M., 54231, 63005) and Rio Esnape in extreme 

 eastern Panama. The last two lots are so near the type local- 

 ity, the Truando region of Colombia, as to be virtually topo- 

 types. 



P. talamancae has been seen from Santa Cecilia and from 

 Suretka, Costa Rica, and from La Loma in Panama. It was 

 described from Old Harbor on the coast between Limon and 

 Almirante. 



The most obvious difference between the two is the marking 

 of the sides. In both species the dorsal region is gray and the 

 sides are an intense black. There is an ill-defined light line 

 where the gray and black meet. In both species a white streak 

 starts from the groin and passes obliquely forward and up- 

 ward toward the upper eyelid. In latinasiis it dies out about 

 halfway between leg and arm, but in talamancae it reaches the 

 eye, and rather supersedes the ill-defined line which separates 

 the black from the gray. The result is that talamancae ap- 

 parently has a single white streak on the side and that latina- 

 siis has one and a half. 



The marking of the thigh in talamancae is a hooked or 

 "anvil-shaped" affair, owing to the dark line along the dorsal 

 surface of the thigh running into a black area in the knee-pit 

 which extends along the posterior aspect of the thigh. In lati- 

 nasus this latter is absent and there is merely a dark streak 

 on the dorsal surface. 



The legs of latinasus are barred, while the legs of tala- 

 mancae are not barred. 



There are various differences in the length of toes and size 

 of disks. These differences are essentially that the inner and 

 outer toes of talamancae are reduced. Thus the tip of toe I 

 reaches the penultimate joint of II in latinasiis but not in tala- 

 mancae and beyond it in latinasus. Two phalanges of IV are 

 in latinasus but only the antepenultimate in talamancae. The 

 tip of III reaches the antepenultimate joint of IV in tala- 

 mancae and beyond it in latinasus. Two phalanges of IV are 

 beyond the tip of V in latinasus and 2V^ in talamancae. The 

 tip of V reaches the penultimate joint of III in talamancae 

 and beyond it in latinasus. The disk of V is equal to half the 



