4. HTLA. 401 



the tibio-tarsal articulation reaches the front of the orbit. Skin 

 smooth above, sides rugulose. Dark olive above, with a short lon- 

 gitudinal black bar over each scapula, and one from eye to eye, with 

 a trace along the coccyx ; below yellowish. Male with a large gular 

 vocal sac. From snout to vent 28 miUim. 

 Mexico. 



104. Hyla punctariola. 



Hyla punctariola, Peters, Mon. Btrl. Ac. 1863, p. 462 ; Cope^ Journ. 

 Ac. Philad. (n. s.) viii. 1876, p. 106. 



Tongue heart-shaped, openly emarginate. Vomerine teeth in two 

 small groups behind the level of the choanae. Snout slightly longer 

 than the diameter of the eye ; tympanum somewhat more than one 

 third the diameter of the eye. Eingers quite free ; toes three- 

 fourths webbed ; disks moderate. The hind limb being carried 

 forwards along the body, two thirds of the tarsus extend beyond the 

 tip of the snout. Skin smooth. Brown above ; a cross band between 

 the eyes and a large spot on the snout ; upper lip with whitish bars 

 alternating with brown ones ; limbs cross-barred with dark brown ; 

 fingers and toes cross-barred with brown and white ; beneath dirty 

 white ; the throat brown, dotted with white. From snout to vent 

 22 millim. 



Veragua. 



Mr. Cope, I. c, distinguishes three varieties of coloration, which 

 he describes as " subspecies," suspecting, however, that they may be 

 true species. These are named pictipes. moesta, and monticola. All 

 three from Costa Eica. Mr. Cope describes these Costa-Eican 

 specimens as having a web at the base of the outer fingers, and the 

 " heel extends nearly or quite to the end of the muzzle," thus 

 differing widely from the original description by Prof. Peters. 



105. Hyla Mstincta. 

 Hyla bistincta, Cope, Proc. Ainer. Philos. Soc. xvii. 1877, p. 87. 



Vomerine teeth in two small groups between the choanse. Head, 

 particularly the interorbital region, broad and flat ; canthus rostralis 

 distinct ; tympanum exceedingly small, one fifth the diameter of the 

 eye, overhung by a thick dermal fold. Fingers free ; toes not fuUy 

 webbed. The hind limb being carried forwards along the body, the 

 tibio-tarsal articulation reaches nearly the tip of the snout. Dark 

 bluish plumbeous above, yellow beneath ; sides marbled vnth the 

 two colours ; hinder side of thighs pale brown, with a few yeUow 

 specks along the superior border. Male with rugosities on the inner 

 side of the first finger during the breeding-season. From snout to 

 vent 45 miUim. 



Vera Cruz. 



2n 



