4. HYLA, 399 
 Cnigeeper 
98. Hyla pickeringii. 
Acris pickeringii, Giinth. Cat. p. 71. 
Hylodes pickeringii, Holbr. N.-Amer. Herp. iv. p. 135, pl. 34. 
Hyla pickeringii, Leconte, Prec, Ac. Philad. vii. 1854, p. 429. 
Tongue heart-shaped, free behind. Vomerine teeth in two small 
groups just behind the level of the choane. Head moderate, as 
long as broad ; snout subacuminate, once and a half as long as the 
diameter of the eye ; canthus rostralis distinct ; loreal region slightly 
concave ; interorbital space broader than the upper eyelid; tym- 
panum small, hardly visible. Fingers free ; no projecting rudiment 
of pollex; toes not quite half webbed; disks and subarticular 
tubercles moderate. The hind: limb being carried forwards along 
the body, the tibio-tarsal articulation reaches the eye. Skin smooth 
or minutely tuberculate above, granulate beneath. Greyish above, 
dotted with darker, and with angular symmetrical lines; a dark 
streak from the tip of the snout through the eye to the middle of 
the side; tibiz cross-barred; beneath whitish, immaculate. Male 
with an internal subgular vocal sac. From snout to vent 17 millim. 
United States (Hastern Region). 
Cho ie N. America. 
99. Hyla curta. 
Hyla curta, Cope, Proc. Ac. Philad. 1866, p. 313. 
Tongue free behind. Vomerine teeth in two groups between the 
choane. Snout projecting ; canthus rostralis well defined, straight ; 
loreal region not concave ; tympanum one third the diameter of the 
eye. Fingers and toes stout, the former free, the latter half webbed ; 
disks well defined. The hind limb being carried forwards along the 
body, the tibio-tarsal articulation reaches the anterior margin of the 
orbit. Skin smooth or sparsely and finely tuberculate above. Above 
ashy brown, with a dark interocular triangle and a broad dorso- 
lateral band on each side, often broken into elongate spots; limbs 
punctulate and cross-barred. Male without vocal sac. From snout 
to vent 95 millim. 
Cape St. Lucas, Lower California. 
100. Hyla elzochroa. 
Hyla eleeochroa, Cope, Journ. Ac. Philad. (nu. 8.) viii. p. 105, pl. 26. f. 3. 
Tongue longer than wide. Vomerine teeth between the choane, 
in two short series directed backwards towards the median line. 
Snout elongate and plane above, and slightly projecting. Hye large, 
four or five times the area of the membranum tympani. Fingers 
entirely free ; toes two-thirds webbed ; disks large. The hind limb 
being carried forwards along the body, the tibio-tarsal articulation 
reaches the tip of the snout. Colour above and below a uniform 
