little-known South- American Frogs. 299 



long ; snout rounded, as long as the diameter of the orbit ; 

 canthus rostralis angular ; loveal region very oblique, con- 

 cave ; nostril nearer the end of the snout than the eye ; inter- 

 orbital space as broad as the upper eyelid ; tympanum very 

 distinct, half the diameter of the eye. Fingers one-fourth 

 webbed ; a distinct rudiment of pollex ; toes half- webbed ; 

 disks smaller than the tympanum ; subarticular tubercles 

 moderate ; a very slight fold along the inner edge of the 

 tarsus. The tibio-tarsal articulation reaches halfway between 

 the eye and the end of the snout. Skin smooth above ; belly 

 and lower surface of thighs with large, throat with smaller, 

 granules. Greyish or pale brown above, with or without 

 large brown spots and a brown line along the middle of the 

 head and anterior half of body ; a dark brown band from the 

 end of the snout to above the shoulder, passing through the 

 nostril and the eye and over the tympanum ; a dark brown 

 line borders the upper and the lower lip ; a dark brown streak 

 along the outer side of the tibia ; hinder side of thighs light, 

 with vertical black bars ; lower surfaces white. From snout 

 to vent d5 millim. 



Mundo Novo, Rio Grande do Sul. 



Two female specimens, collected by Hr. Bischoff. 



Allied to H. pulchella, D. & B., but well distinguished by 

 the larger head with much more oblique lores. 



Hyla zehra, D. & B. 



Tongue circular, indistinctly nicked, posterior fourth free. 

 Vomerine teeth in two small groups in the middle between 

 the choanse ; latter moderate, a little larger than the eusta- 

 chian tubes. Head moderately large, a little broader than 

 long ; snout rounded, nearly as long as the diameter of the 

 orbit; canthus rostralis obtuse; loreal region nearly vertical ; 

 nostril nearer the end of the snout than the eye ; interorbital 

 space as broad as the upper eyelid; tympanum very distinct, 

 half the diameter of the eye. Fingers one-third webbed ; a 

 distinct rudiment of pollex ; toes two thirds webbed ; disks 

 a little smaller than the tympanum ; subarticular tubercles 

 moderate ; a strong fold along the inner edge of the tarsus. 

 The tibio-tarsal articulation reaches halfway between the eye 

 and the end of the snout. Upper surfaces glandular, the 

 glandules most distinct on the head and limbs, but present 

 also on the back ; belly and lower surface of thighs with 

 large, throat with smaller granules. Brown above, with large 

 blackish spots on the sides and blackish bars across the front 

 and posterior sides of the thighs, alternating with lighter 



