Occasional Papers of the Museum of Zoology 11 



late throughout ; brown, posterior half of tail with black line 

 on upper edge of muscle, some mottlings on other parts of 

 muscle and a few dots on crests; total 31 mm., head and body 

 9, tail 22. Many of the tadpoles are lighter in color than the 

 described one but in all the dark line on the tail can be made 

 out. 



These two sorts of tadpoles were common in the stream at 

 La Loma. Those of latinasus were similar to Rana tadpoles in 

 appearance and in actions. The tadpoles of talamancae seemed 

 to remain in the depest parts of the pools and were very active 

 and darter-like in their movements. 



Three tadpoles from near Boquete: "under low stones in 

 washed out cavity at edge of small stream, 4,100 feet," col- 

 lected by the Gaiges, February 26, 1923, are much like the 

 tadpoles of talamancae, but with quite obvious differences. 

 They are probably the larvae of nuhicola. 



Diagnosis of mature tadpole of P. nubicola: Spiracle sinis- 

 tral, anus dextral, eye invisible from the ventral surface, 

 upper fin crest well developed only on distal 2/3 of tail, dis- 

 tance from spiracle to base of hind limb contained 1.2 times 

 in its distance from the snout, labial teeth 1/0, uniform 

 brown, largest of the three 32 mm. long. 



Description of mature tadpole of P. nubicola: Length of 

 body contained 3.2 times in total length ; nostril nearer snout 

 than to eye ; eye dorsal, not visible from below ; eye nearer 

 snout than to spiracle; distance between nostrils = interor- 

 bital width, less than width of mouth; spiracle sinistral, its 

 distance from the base of the hind limb contained 1.2 times 

 in its distance from the snout; anus dextral; depth of mus- 

 cular portion of tail at base is the greatest depth of tail ; labial 

 teeth 1/0 ; the row of teeth not as long as width of beak ; a few 

 teeth between tooth row and beak perhaps represent a rudi- 

 mentary^ inner upper row ; a broad labial disk, posterior part 

 twice as deep as anterior, papillate throughout ; brown, prac- 

 tically uniform, crests pale; total length 32 mm., head and 

 body 10 mm., tail 22 mm. 



In both adult and tadpole nuhicola is intermediate between 

 latmasus and talamancae. 



