On BatracJdans and Reptiles from Venezuela. 481 



length, but considerably broader (fig. 7), with the penulti- 

 mate joint slightly more than four times longer than broad ; 

 the external branch of the uropods only three and a half 

 times longer than broad. 



S. iner/nis is not a young specimen of S. robustus : iu 

 specimens of Sergestes which have acquired black eyes the 

 length of the eyes in proportion to the length of their stalks 

 is not altered during growth^ and tlie proportion between 

 length and breadth of the external branch of the uropods 

 remains constant. Furthermore, I have examined specimens 

 of a full-grown Mastigopus which I refer to S. robustus, and 

 these specimens agree rather well with the adult S. robustus 

 and differ from S. inermis in some of the features just 

 mentioned — for instance, in the breadth of the fifth pair of 

 thoracic legs and of the external branch of the uropods. 



LXVIII. — On some Batrachians and Eeptiles from Venezuela. 

 By G. A. BouLENGER, F.R.S. 



A SMALL collection made by Sr. S. Briceiio at Merida, 

 Venezuela, at an altitude of 1600 metres, which it is hoped 

 will be acquired for the British Museum, is interesting as 

 extending the known distribution of several Batrachians and 

 lleptiles and as containing types of four undescribed species. 



Bateachians. 



1. Ilyla crepitans, Wied. 



2. Leptodactylus caliginosus, Gir. 



3. Hylodes Briceni, sp. n. 



Tongue oval, entire. Vomerine teeth in two small, 

 rounded or oblique groups behind the level of the clioanaj. 

 Snout rounded, as long as the diameter of the orbit ; canthus 

 rostralis distinct ; loreal region concave ; nostril nearer the 

 tip of the snout than the eye ; interorbital region as broad as 

 or slightly broader than the upper eyelid; fronto-parietals a 

 little concave, with prominent edges as in H. Buckleyi, BIgr. ; 

 tympanum distinct, about half the diameter of the eye. 

 Fingers moderate, first shorter than second ; toes quite free ; 

 disks small, smaller than tlie tympanum ; subarticular tuber- 

 cles very feebly prominent ; a rather large oval inner, and a 

 small round outer metatarsal tubercle. The tibio-tarsal 



Ann. & Mag. N. IJist, Ser. 7. Vol xi. 34 



