4 Hynes. 37D 
small groups between the choane. Snout short, rather truncate : 
canthus rostralis distinct ; loreal region nearly vertical ; tympanum 
half the diameter of the eye. Fingers rather slender, webbed at 
the base; toes two-thirds webbed; disks smaller than the tym- 
panum; subarticular tubercles moderate. The hind limb being 
carried forwards along the body, the tarso-metatarsal articulation 
marks the tip of the snout. Skin smooth above, granulate beneath ; 
a fold above the tympanum, and another across the chest. Uniform 
chestnut-brown above, whitish beneath. From snout to vent 
42 millim. 
America ? 
49, Hyla zebra. 
Hyla zebra, Dum. § Bibr. p. 575, 
Vomerine teeth on a level with the hinder edge of the choane. 
Fingers one-third, toes four-fifths webbed. Head covered with 
small granules. Flanks with large black spots; thighs with broad 
black bands alternating with narrower white ones. Otherwise as 
in H, fusca. From snout to vent 64 millim. 
Buenos Ayres, 
50, Hyla pulchella. 
Hyla agrestis, Giinth. Cat. p. 105. 
Hyla prasina, Giinth. 1. e. 
Hyla pulchella, Dum. § Bibr. p. 588; Stetndachn. Abh, zool.-bot, 
Ges. Wien, 1864, p. 211, pl. 9. f. 2. 
? Hyla leucomelas, Dum. § Bibr. p.576. 
Tyla agrestis, Bell, Zool. Beagle, Rept. p. 4G, pl. 19, £.3; Cunningh. 
Trans, Linn, Soe, Xxxii. p. 468. 
prasina, Burmeist. Lrliuter. p. 106, pl. 31. f£. 2; Giebel, Zeitschr. 
Ges, Naturwiss. Xxix. p. 28. 
lateralis, Raddi, Mem. Soc. Ital. xix. p. 67. 
rubicundula, /Zensel, Arch. f. Naturg. 1867, p. 158, 
y 
Tongue subcircular, entire, and free behind. Vomerine teeth in 
two small groups on a level with the hinder edge of the choane. 
Head rather small, about as long as broad; snout rounded, longer 
than the diameter of the eye; canthus rostralis distinct; loreal 
region nearly vertical; interorbital space as broad as, or a little 
broader than, the upper eyelid; tympanum very distinct, about half 
the diameter of the eye. Fingers slightly webbed ; no projecting 
rudiment of pollex; toes two-thirds or three-fourths webbed; disks 
smaller than the tympanum ; subarticular tubercles moderate; a 
distinct fold along the inner edge of the tarsus. he hind limb 
being carried forwards along the body, the tibio-tarsal articula- 
tion reaches the tip of the snout, or nearly so. Skin smooth or 
minutely granulate above, strongly granulate beneath; a fold from 
the eye to the shoulder, above the tympanum. The specimens at 
my disposal show two varieties of coloration, which are perhaps 
