HYLA. 275 
equals its distance from the nostril, and is rather more than the distance of the nostrils 
from each other. ‘Tympanum circular, about one-half or one-third the area of the 
eye, its diameter being much less than that of the eye. Choane rather narrow, but 
wider than the eustachian ostia. Tongue broader than long, slightly notched behind. 
Interorbital space much wider than the upper eyelid. The three outer fingers one-third 
webbed, with disks of the size of the tympanum. Toes three-fourths webbed, the web 
reaching the disks of the third and fourth toes, and leaving free the last phalanx 
of the fourth; disks rather smaller than those of the fingers; metatarsal tubercle 
small; no tarsal fold. When carried forwards, the heel reaches the front margin of 
the orbit. Upper parts, throat, and chest generally smooth; abdomen areolated; a 
slight fold above the tympanum; no other fold or appendage. Upper parts plum- 
coloured, with a very obscure darker hourglass-shaped patch on the back, beginning 
between the eyes ; cross-bands on the hind limbs; concealed surfaces of femur uniform 
dark, like back, but without spots. Lower parts white, throat speckled with brown. 
The groin where the two colours meet shows some marbling or spotting. Another 
variety has a greyish or white back ; a broad deep brown fascia on the side of the body 
starts from the eye and tympanum, and is variegated with more or less numerous 
yellow spots along its lower margin. Male with an internal vocal sac, and with the 
skin of the pollex thickened and black. 
3. °. 
Width ofhead . . . . . «125 millim. 14 millim. 
Distance of vent from snout . .. =. . 40 a 4] yy 
” ” heel . . . . . . 88 . 37 yy 
» » metatarsal joint . . 47 ” 48, 
” - end of fourth toe. . 65 » 63g, 
21. Hyla godmani, sp.n. (Tab. LXXII. fig. E.) 
Hab. Mexico, Misantla and Jalapa (/. D. G.); ? Costa Rica, La Palma (Mus. Nac. de 
Costa Rica, San José). 
Vomerine teeth between the choane, in two slightly oblique series convergent behind ; 
tongue as broad as long. Head broad, depressed ; snout * as long as the eye; diameter 
of the eye a little more than its distance from the nostril, and much more than the 
distance between the nostrils ; canthi rostrales obtuse and rather concave; sides of the 
snout sloping; interorbital space wider than upper eyelid. Tympanum one-third (or a 
little less) of the area of the eye. Fingers half-webbed, the web nearly reaching the 
disks of the fourth and second fingers, and leaving free the last phalanx of the third; 
a rudimentary web connects the first and second fingers at the base; the disks equal 
nearly the tympanum, and are larger than those of the toes. Toes four-fifths webbed ; 
a distinct tarsal fold. When carried forward, the heel reaches the end of the snout or 
a little beyond. Upper parts smooth; abdomen finely granular. Purplish or reddish 
* Always measured along the longitudinal axis. 
