Cope.] ^^ [March 18. 



line extends from the orbit above the tympanic drum to the axilla. 

 Posterior side of humerus and axillary web, black, the color produced in 

 an angle towards the middle of the thorax on each side. Groin, femur 

 except lower surface, inferior side of tibia and hind foot, anterior face of 

 tarsus and web of inner three toes, pitchy black. A row of five or six 

 small, silvery gray spots on the superior surface of the femur and sur- 

 rounding the vent. With this exception, the superior surfaces of limbs 

 light gray with darker gray cross-bands with black edges ; three on the 

 tibia. 



M. 



Length head and body 039 



" " to posterior line of tympana 0095 



Width " at " " " " 013 



Length of anterior limb anteriorly 0265 



foot Oil 



" " posterior limb from groin 0575 



foot 026 



" " " " without tarsus 016 



This species belongs to the same group as the Hyla marmorata in the 

 general characters of skin and coloration. It is however of more slender 

 form, and has less extensive palmation. The color diflfers in the absence 

 of the yellow, which is so conspicuous in the H. marmorata, and in other 

 respects. 



Three individuals. 



4. Hyla velata, sp. nov. 



Size small ; head short, wide, muzzle obtuse, not prominent, not long as 

 the diameter of the eye. Nostril terminal. Tympanic membrane not 

 very distinct, diameter not more than one-third that of the eye- slit, in 

 some specimens one-fourth. Canthus rostralis not distinct, vomerine teeth 

 between choanse, not projecting posterior to the line connecting them. 

 Tongue subround, with an open median notch behind. 



The length of the head to the line connecting the posterior borders of 

 the tympanic membranes, is contained in that of the head and body three 

 and a half times. The hind leg when extended marks the end of the 

 muzzle with the heel. The skin of the upper surfaces is smooth. An ex- 

 tension of the skin of the sides binds the humerus by its proximal half. 

 There is a web between all the fingers which does not reach the discs of 

 the third and fifth, being less than a half palmation. The web of the pes 

 does not quite reach the discs of the digits excepting the fourth, where it 

 leaves two and a half phalanges free. No dermal fold on the tibia or 

 fore-arm. 



Color above golden-brown, with a large patch finely dusted with dark 

 brown, with a narrow dark-brown border, extending from between the 

 eyes to the middle of the back, and sending a broad branch down to the 

 middle of each side without defined inferior border. The outlines are con- 



