226 
L. Y. MÉHELŸ 
separated series between the choanae ; latters smaller than in Hyla boans 
Daud. Snout rounded, slightly longer than the diameter of the orbit, once 
and a half as long as the diameter of the eye. Nostril as far from the 
anterior corner of the eye as the diameter of the latter ; canthus rostralis 
more or less angular, slightly inwards curved ; tympanum at the most 
two thirds the diameter of the eye ; interorbital space broader than the 
upper eyelid. The three outer fingers one fourth webbed, between the 
inner and the second only a slight margin ; toes three fourths webbed ; 
disks two thirds the diameter of the tympanum ; inner metatarsal tubercle 
oval, the outer absent; tibio-tarsal aticulation reaches much 
(with one fourth or one fifth of the length of tibia) beyond the tip of 
the snout.* Skin smooth above, granular on the belly and under the 
thighs. A narrow glandular fold above the tympanum from the posterior 
corner of the eye nearly to the middle of the flank : a slight fold from 
the inner metatarsal tubercle along the tarsus, another on the hinder 
side of the forearm more or less distinct. 
Coloration . Beddish-brown above with more or less distinct, some¬ 
times nearly absent dark bands across the head, back and flanks ; on two 
specimens in longitudinal bands arranged on head and back, on one spe¬ 
cimen an undulated dark vertebral stripe. Limbs with dark cross-bands, 
which extend to, and are blackish-red on the hinder side of the 
thighs. Above the anal cleft no white cross-bar as distinct on Hyla boans 
Daud. from Surinam, which I have investigated through the kindness of 
Dr. Steindachner. Hinder edge of the fifth toe white, extending as a stripe 
to the tibia ; a similar stripe on the hinder side of the forearm. Sides of 
head dark, the postorbital fold blackish. Under surface whitish, lower lip 
white, throat and breast more or less mottled with brown. 
The described specimens differing from Boulenger’s Argentinian 
examples by its smaller tympanum, larger disks and much longer hind 
limbs and could be perhaps regarded as a distinct variety. 
17. Hyla venulosa Laur* 
Rana venulosa Laurenti, Syn. Kept., 1768, p. 31. 
Hyla venulosa Steindachner, Exp. Novara, Amphib., 1869, p. 58, tab. Ill, 
fig. 18; Boulenger, Oat. Batr. Sal., 1882, p. 364. 
Two males (78 and 80 mm.) and a female (63 mm.) agreeing strictly 
with the descriptions and Dr. Steindachner’ s splendid figure. Males uni- 
* The same proportion is present on a specimen from Lugne (Paraguay), 
which I have received from Count Peracca. On Boulenger’s specimens from Ar- 
gentinia the tibio-tarsal articulation reaches only the tip of the snout. 
