1885.] 4*3 [Cope. 



concave. Nostrils terminal and lateral. Tympanum three -fifths diameter 

 of orbit, larger than digital discs. Both anterior and posterior feet pal- 

 mate to the bases of the last phalanges of the longest digits, except be- 

 tween the second and third anterior digits, which is only palmate to the 

 bases of the penultimate digits. When the hind leg is extended the heel 

 reaches the end of the muzzle. The posterior digits are short, but two 

 phalanges projecting beyond the knee when the leg is closed. The pal- 

 mation is wide, and extends a short distance between the external meta- 

 tarsals. A well-marked cuneiform tubercle, with slightly free apex. 



The under surfaces have the usual areolation. The superior surfaces are 

 thickly covered with small tubercles, which are largest and most prominent 

 on the top of the head, where some of them are subspinous. There is a 

 serrate narrow free dermal margin on the external edge of the fore leg, 

 from the elbow to the end of the fifth digit, and a similar one on the ex- 

 ternal edge of the posterior foot. There is none on the side of the body. 



Length of head and body M. .062 ; length of head on middle line to 

 line connecting posterior extremities of maxillary bones, .017 ; width of 

 head at same point, .025 ; length of anterior limb from axilla, .03.5 ; do. 

 of fore-arm, .011 ; length of carpus and digit, .019. Length of thigh from 

 groin, .025 ; of tibia, .032 ; of tarsus, .019 ; of foot to end of fourth digit, 

 .025. 



The color of all the upper surfaces is a dark plum or mulberry, with an 

 obscure coarse reticulation of a darker shade. The color of the inferior 

 surfaces everywhere is yellowish, spotted with the color of the dorsal 

 region. At each heel, and just below the vent, there is a yellow spot. 

 The webs of both fore and hinder feet are plum-color, except the borders, 

 which are yellowish. The digits are yellowish on the under sides. There 

 is a spot of pale color on the upper lip below the space between the orbit 

 and the tympanum, and some less distinct spots on the lip anterior to it. 

 The dermal processes of the fore- arm and tarsus are light yellowish. 



Collection No. 14193. 



This fine species approaches nearer in coloration, dermal character, and 

 form of palmation to the Hyla marmorata than to any other species of 

 that genus. The remarkable development of the pollex, however, places 

 it in the genus Hypsiboas, although it differs materially in the details of 

 this part from the known species of the genus. 



8. Hypsiboas albomarginatus Spix. Nos. 14190-91-92. One of the three 



specimens has a yellow dorsolateral band on each side. 



9. Hyla quinquevittata, sp. nov. 



Rather small. External fingers with a slight rudiment of a web at their 

 bases. Toes with web only reaching the middle of the penultimate pha- 

 langes of the third and fifth digits. Vomerine teeth in two rather large 

 rounded fasciculi close together on the anterior half of the space between 

 the choanal Tongue a little longer than wide, feebly notched. Tympanic 

 membrane round, two-fifths the long diameter of the eye-fissure. The 



PROC. AMER. PHILOS. SOC. XXIII. 122. 2l. PRINTED FEBRUARY 11, 1886. 



