276 BATRACHIA SALIENTTA. 
olive, with fine but obscure marbling; sides sometimes more distinctly marbled with 
brown, black, and white; sides of the head not spotted ; concealed surfaces of the limbs 
not spotted. Lower parts whitish. 
2. 2. 
Width of head . ...... . . . 14millim. 13°5 millim. 
Distance of vent from snout. . . . . . 87 ,, 37S t=s, 
» ” heel . . . . . . 88, 36, 
» ” metatarsal joint . . 51 ,, 46, 
> » end of fourth toe . . 64 ,, 61s, 
Two specimens from La Palma, Costa Rica, seem to me to belong to the same species, 
although they differ in two of the technical characters. The tympanum is conspicuously 
larger, about one-half the area of the eye, and the web between the fingers a little 
broader. Otherwise the agreement as regards general habit and proportion and 
coloration is so striking that I must hesitate to describe this as a distinct species. 
22. Hyla uranochroa, (Tab. LXX. fig. D.) 
Hyla uranochroa, Cope, Journ. Ac. N. Sc. Philad. viii. p. 103, t. 27. fig. 4 (bad) (1878) ; Bouleng. 
Batr. Sal. p. 377. 
Hab. Costa Rica, Rio Sucio (Rogers), La Palma, alt. 1600 metres (Zristan and Under- 
wood), Sipurio (Cope). 
Vomerine teeth in two transverse groups, between the rather narrow choane. Snout 
short, depressed, with canthus and rather sloping sides. Distance of nostril from the 
eye equal to the diameter of the latter. Interorbital space wider than the upper 
eyelid. Tympanum distinct, one-half the area of the eye. Fingers one-third 
webbed, with disks which are rather larger than those of the toes, but smaller than 
the tympanum; no external rudiment of pollex. Toes three-fourths webbed; no 
tarsal fold. Upper parts smooth, abdomen granular; no folds or appendages. 
Uniform purplish-blue above (?green in life), white below; a narrow, sharply defined, 
yellowish line runs round the edge of the upper lip, slightly dilated below, and 
touching, the eye; the line is continued above the shoulder along the side, where 
it forms a sharp boundary between the colours of the upper and lower parts. Meta- 
tarsus and outer toe with a yellow edge; a cross-line above, and tubercles round, the 
vent yellow. Concealed surfaces of thigh uncoloured. 
°. 
Greatest width of head . . . . .. .. . . +. . +10 millim. 
Distance of vent from snout . . . . .. .. . . 8) ,, 
- ” heel . . 2... (80 =, 
- metatarsal jomt. . ... . . 40 _,, 
end of fourth toe . . . . . . 50. ,, 
oP, 3) 
This species has the peculiar coloration of Hyla carolinensis, which it represents in 
