HYLIDJ5. 509 



studded with minute dark-brown points, and similar rugosities on 

 the three inner fingers. 



From snout to vent 2 inches. 



Hob. A rare Batrachian, hitherto recorded only from Sikhim, 

 reaching an altitude of 13,000 feet. 



Family V. HYLID.E. 



Upper jaw toothed ; diapophyses of sacral vertebra dilated ; 

 distal phalanges claw-like, swollen at the base. 



The Hylidce are arboreal frogs, very abundantly represented in 

 America and Australia and by a few species in the Palaearctic 

 region. The species described below is to be regarded as an 

 outpost from the fauna of the latter region. 



Genus HYLA. 

 Laureiiti, Syn. Kept. p. 3:2 (part.), 17<>8. 



Pupil horizontal. Tongue entire or slightly nicked, adherent or 

 more or less free behind. Vomerine teeth. Tympanum distinct 

 or hidden, Fingers free or more or less webbed : toes webbed, 

 the tips dilated into smaller or largei 1 disks. Outer metatarsals 

 united or slightly separated. Omosternum cartilaginous ; sternum 

 a cartilaginous plate. Diapophyses of sacral vertebra more or less 

 dilated. 



Distribution, About 150 species are known, from America, 

 Australia, Papuasia, and the Palaearctic region. 



120. Hyla annectens. 



Polypedates aimectens, Jordan, P. A. S. R 1870, p. 84. 

 Hyla aimectens, Giinth. P. Z. & 1875, p. o70; Roulewi. Cat. Batr. 

 Sal. p. 38-2. 



Tongue circular, slightly nicked, and free behind. Yomerine 

 teeth in two groups on a level with the hinder edge of the choarue. 

 Head broader than long ; snout short, rounded ; canthus rostralis 

 distinct ; interorbital space as broad as the upper eyelid ; tympanum 

 distinct, about half the diameter of the eye. Fingers webbed at 

 the base ; toes two-thirds webbed ; disks well developed. JThe 

 tibio-tarsal articulation reaches the tympanum or the eye. Skin 

 smooth above, granular beneath ; a strong tuberculated fold from 

 the eye to the shoulder. Green above ; a dark, lateral streak, light- 

 edged above, ending in two or three deep black spots, separated or 

 confluent on the groin, which is bright yellow; sides of thighs with 

 deep black spots on a bright yellow ground ; two outer fingers and 



