248 MR, G. A. BOULENGER ON BATRACHIANS AND 



3. Htla MONTANA Peters & Doria. 



Camp I, Utakwa R., and Canoe Camp, Setekwa R. (Wollaston Exped.). 



4. Hyla fall ax Bigr. 



Proc. Zool. Soc. 1898, p. 482, pi. xxsix. fig. 4. 



Hylella boulengeri Mehely, Term. Fiizet. Budapest, xx. 1897, p. 414, pi. x. fig. 8, is 

 probably based on a young specimen of this species. Should it be so, the name 

 ff/Uax will nevertheless stand, as there is a previously described //y/a boulengeri 

 \Sci/toins boulengeri Cope, Bull. U.S. Nat. Mus. no. 32, 1887, p. 12). 



Two specimens from Launch Camp, Setekwa R. (Wollaston Exped.). 



5. Htla thesaurensis Peters. 



Five specimens from Launch Camp, Setekwa R. (Wollaston Exped.). 



6. Htla wollastoni, sp. n. (PI. XXVII. fig. 1.) 



Tongue oval, free and feebly notched behind. Vomerine teeth in two oblique 

 groups between the choanse. Head slightly broader than long ; snout rounded, as 

 long as the eye, with sharp canthus and not very oblique, concave lores ; nostril 

 nearer the tip of the snout than the eye ; interorbital space nearly as broad as the 

 upper eyelid ; tympanum distinct, two-fifths the diameter of the eye. Fingers 

 moderately elongate, with a rudiment of web, the disks as large as the tympanum ; 

 toes extensively webbed, the membrane reaching the disks of the third and fifth, two 

 phalanges of fourth free, the disks a little smaller than those of the fingers ; no tarsal 

 fold. Tibio-tarsal articulation reaching beyond the tip of the snout ; tibia as long 

 as distance from occiput to vent. Skin smooth above, granular on the sides and 

 beneath ; a strong, straight glandular fold from behind the eye to above the shoulder ; 

 a subconical tubercle on the upper eyelid and others around the vent ; a spur-like 

 tubercle on the heel. Green above, with black spots forming an hour-glass marking 

 from between the eyes to the sacrum ; a fine whitish streak, edged with black beneath, 

 from the tip of the snout along the canthus rostralis to the eye and along the fold 

 behind the eye ; lower parts yellowish white, with scattered small brown spots. Male 

 with an external gular vocal sac. 



From snout to vent 46 mm. 



A single specimen from Camp VI, Utakwa R., 2100 ft. (Wollaston Exped.). 



7. Htlella chloronota Blgr. 



Ann. & Mag. N. H. (8) viii. 1911, p. 55. 

 A single specimen from Camp III, Utakwa R., 2500 ft, (Wollaston Exped.). 



