4. HTLA. 361 



24. Hyla lanciformis. 

 Hypaiboas lanciformis, Cope, Proc. Amer. Philos. Soe. 1870, p. 556. 



Tongue oval, indistinctly nicked, adherent. Vomerine teeth be- 

 tween the very large choanas, in two angular series, forming together 

 a f~\. Habit very slender. Head longer than broad ; snout acumi- 

 nate, once and a half as long as the diameter of the eye ; the 

 distance between the nostril and the ej-e is greater than the diameter 

 of the latter ; canthus rostralis angular, straight ; loreal region not 

 very oblique, concave ; interorbital space as broad as the upper eye- 

 lid ; tympanum very distinct, three fourths the diameter of the eye. 

 A very slight web between the three outer fingers, none between 

 the inner ; a slight rudiment of pollex ; toes three-fourths webbed ; 

 disks of fingers and toes much smaller than the tympanum ; subar- 

 ticular tubercles well developed. The hind limb being carried 

 forwards along the body, the tibio-tarsal articulation reaches far 

 beyond the tip of the snout ; the tibia measures a little more than 

 the distance from axilla to vent. Head and back minutely granulate ; 

 belly and lower surface of thighs granulate ; a narrow, straight, 

 glandular fold from the eye above the tympanum, lost at a small 

 distance beyond the vertical of the shoulder. Dark brown above, 

 with darker bands across the head, body, and limbs ; a blackish 

 vertebral line ; sides of head blackish ; a white streak round the 

 ujjper lip ; sides of hind limbs blackish ; disks of the three inner 

 fingers yellowish above ; brown beneath, with a few large whitish 

 spots on the thoracic region. Male with an external gular vocal 

 sac. Prom snout to vent 77 millim. 



Ecuador. 

 a. d' . Canelos. Mr. Buckley [C.]. 



25. Hyla spectrum. 



Hyla spectrum, Reinh. 8^ Liith. Vidensh. Meddel. 1861, p. 195. 

 Hypsiboas spectrum, Cope, Journ. Ac. Philad. (2) vi. 1867, p. 200. 



Tongue slightly emarginate. Vomerine teeth in two oblique 

 series converging towards front, between the choanse. Head large, 

 as broad as long ; snout subacuminate ; canthus rostralis distinct ; 

 loreal region high, nearly vertical. Pingers webbed at the base ; a 

 projecting rudiment of pollex (?). Hind limb very slender. Skin 

 smooth above, granulate on the belly and under the thighs ; a shght 

 fold along the forearm and tarsus ; heel with a dermal appendage. 

 Brownish above, with faint bands across the back and hind limbs ; a 

 dark vertebral line, beginning from the tip of the snout. 



Brazil. 



26. Hyla leprieurii. 



Hyla leprieurii, Oilnth. Cat. p. 101. 

 Hyla leprieurii, Hum. Sf Bibr. p. 553. 

 Hypsiboas leprieurii, Cope, Journ. Ac. Philad. (2) vi. 1867, p. 200. 



