10 University of Michigan 



Diagnosis of the mature tadpole of P. latinasus: Spiracle 

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

 upper tin crest extending to end of body, distance from spir- 

 acle to base of hind limb contained 1.2 times in its distance 

 from the snout, labial teeth 2/3, light grayish brown, fine dots 

 on tail and on crests, greatest length 36 mm. 



Description of mature tadpole of P. latinasus: Length of 

 body contained 2.9 times in total length ; width of body 1.4 in 

 its own length; nostril equidistant between eye and snout; 

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

 spiracle; distance between nostrils = interorbital width = 

 width of mouth; spiracle sinistral, its distance from the base 

 of the hind legs 1.2 times in its distance from the snout ; anus 

 dextral; depth of the muscular portion of the tail contained 

 twice in greatest depth of tail. Upper labium with two series 

 of teeth equal in length, inner divided in the middle for a dis- 

 tance equal to i^ the length of either half ; lower labium with 

 three equal series of teeth ; papillate border of mouth broadly 

 absent anteriorly, upper row of teeth forming border; light 

 grayish brown above, darker spots on base of tail and on 

 crests. Total length 32 mm., head and body 11 mm, tail 

 21 mm. 



Diagnosis of mature tadpole of P. talamancae: Spiracle sin- 

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

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

 acle equidistant between snout and base of hind limb, no labial 

 teeth, brownish with a black streak on upper edge of muscular 

 part of tail, greatest length 33 mm. 



Description of mature tadpole of P. talamancae: Length of 

 body contained 3.4 times in total length; width of body 1.3 in 

 its own length ; nostril equidistant between eye and snout ; eye 

 doi-sal, not visible from below, nearer to snout than to spir- 

 acle; distance between nostrils less than interorbital width, 

 less than width of mouth; spiracle sinistral, equidistant be- 

 tween snout and base of hind legs; anus dextral; depth of 

 muscular portion of tail at base contained li/t times in great- 

 est depth of tail; no labial teeth; a broad labial di.sk, the pos- 

 terior portion of which is twice as deep as the anterior, papil- 



