1894.] NATUKAI. SCIENCES OF PHILADELPHIA. 195 



length the Spelerpc.< hellii Gray. Ft resembles in appearance the 

 unicolor form of that species, but differs in its proportions, as well 

 as in the generic character displayed by the feet. The muzzle is 

 longer, and more broadly truncate, and the head is narrower, than in 

 the S. helUi. In the latter the eye is larger, equaling the width of the 

 interorbital space plus that of an eyelid, and is little less than half 

 the width of the head posteriorly. 



One specimen, No. 226, from the Faldas of the volcano of Irazu, 

 from J. P. Cooper. 



SALIENTIA. 

 Hyla cherrei sp. nov. 



Vomerine teeth few, opposite the middle of the very large choanse, 

 at the apex of a ridge which proceeds from the antei'ior margin of 

 the latter. Ostia pharyngea round, large, but smaller than choanse. 

 Tongue longer than wide, but little free, and openly notched poste- 

 riorly. Tympanic drum distiuct, one-half the area of eye, and equal 

 in vertical diameter. Iris dark. Man us almost without web ; pes 

 fully palmate. Thumb not opposed. Heel of extended hind limb 

 reaching end of muzzle. Canthus rostralis straight angular, lores 

 vertical. Width of interorbital space 1.5 times the width of an 

 eyelid. External nostrils terminal, a little nearer the eye than the 

 diameter of the latter. Muzzle not prominent, vertical in profile. 

 Skin smooth above. 



Head and body above pigmented probably with yellow, in abrupt 

 contrast to the color of the rest of the integument, from which it is 

 separated from the orbit to the sacrum by a narrow white stripe. 

 Colors otherwise uniform straw-color, the limbs pigmented on the 

 exposed surfaces ; the humerus and femur not pigmented. 



Length of head and body, 26 mm. ; do. of head to canthus oris, 

 5 mm. ; width of head at do., 8 mm. ; length of fore limb, 17 mm. ; 

 of fore foot, 6 mm. ; length of hind limb, 45 mm. ; do. of hind 

 foot, 20 mm. ; do. of astragalo-calcaneum, 8.5 mm. 



No. 253, Alajuela, R. Alfaro. 



This small and brightly colored species differs from all others 

 known to me in the combination of characters it presents. The 

 sharp canthus rostralis, anterior vomerine teeth, elongate tongue, 

 large choanse, and webless fingers, are not found together in any 

 other species. It is dedicated to Mr. Geo. K. Cherrie, of San Jose, 



