4. HYLA. 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 millim. 

 Mexico. 



104. Hyla punctariola. 



Hvla punctariola, Peters, Mon. Berl. 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 choanse. Snout slightly longer 

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

 third the diameter of the eye. Fingers 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 2)^ctipes. mcesta, and monticola. All 

 three from Costa Rica. Mr. Cope describes these Costa-Rican 

 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 

 diff'ering widely from the original description by Prof. Peters. 



105. Hyla bistincta. 

 Hyla bistincta^ Cope, Proc. Amer. Philos. Sac. xvii. 1877, p. 87. 



Yomerine 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 forwai'ds along the body, the 

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

 bluish plumbeous above, yellow beneath ; sides marbled wdth the 

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

 specks along the supei'ior border. Male with rugosities on the inner 

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

 vent 45 millim. 



Vera Cruz. 



2d 



