TWO NEW FROGS FROM IMEXICO — TAYLOR 47 



Measurements {in mm.).— Snout to vent, 35; width of head, 12.8; 

 length of head, 12.1; arm, 20.2; leg, 57; tibia, 19.2; foot, 24.8. 



Description of the tadpole. — Head and body in profile feebly arched, 

 the dorsal region rather flattened ; outline of the body seen from above is 

 broadly ovoid, shghtly truncate anteriorly. The mouth is ventral; 

 lips moderately narrow, their borders papillate; dental formula of 

 anterior Hp 1 + 1 + 1 ; of posterior Up 1 + 1 + 1 + 1; upper beak broader 

 than lower, both with distinct serrations on edge ; upper beak crescen- 

 tic, lower, broadly V-shaped. 



Nostrils dorsal, nearly midway between eye and tip of snout; 

 spiracle sinistral, tubular; vent sinistral, forming a short tube. 



Tail very long with about 27 segments discernible; tip pointed; fin 

 arising some distance back from base of tail on dorsal surface, and 

 reaching body on under edge of tail, widest near the tip ; eyes blackish. 



Color of tadpole in life.' — Specimens are grajdsh flesh color in life; 

 under the lens there is discernible a peppering of dark pigment over 

 anterior dorsal part of liead and body; on the tail the pigment is 

 extremely sparse, a few dots being visible near the base of the fin. 



Remarks. — The specimens were obtained from bromeliad plants in 

 trees in the vicinity of the village of Cuautlapa. The eggs are laid 

 in the plants, and the young pass through a fau'ly typical larval stage. 



I found one lot of freshly laid eggs, wliich I presumed belonged to 

 this species, on August 18, 1939. They were in a plant only about 6 

 feet from the ground on a stump. In other plants in the same locality 

 numerous tadpoles were taken, some having v/ell-developed limb buds. 

 In specimens collected in the middle of September one was found 

 transformed. 



Many adults in life are generally creamy yellow above and lemon 

 yellow on the posterior part of venter. 



The openings of the vocal sacs are posterior and relatively very 

 small, the throat shows no typical wrinkling. 



The relationship may be with the small bromeliad frog Hyla 

 melanoinma (in press) from Guerrero. The species differs from all 

 other known Mexican hylas in the pigmentation of the gums. 



U S. GOVERNMENT PRiHTINS OFFICE: 1940 



