On some new Species of Reptiles from Madagascar. 313 



falo River which appears to be undescribed. Although the 

 length of the largest specimen does not exceed 4 inches, dissec- 

 tion shows that individuals of that size are fully adult. 



Barhus Trevelyani. 



D. 10. A. 8. L. lat. 34. L. transv. 6/3i. 



Barbels two only, of small size. The osseous dorsal ray is 

 very slender, stiff, with very minute, almost imperceptible 

 posterior serrature. Three longitudinal series of scales be- 

 tween the lateral line and ventral fin. Body oblong, its 

 depth being two sevenths or one fourth of the total length 

 (without caudal), the length of the head one fourth. The 

 depth of the head is less than its length without snout. The 

 diameter of the eye is one fourth of the length of the head, 

 and rather less than that of the snout, or than the width of 

 the interorbital space (which is somewhat convex). Snout 

 rather obtuse ; mouth inferior, small. Dorsal fin of less height 

 than the body, commencing a little behind the origin of the 

 ventral, its first ray being equidistant between the end of the 

 snout and the root of the caudal. Anal small ; caudal rather 

 deeply forked. The pectoral does not extend to the ventral. 

 A narrow dark band runs along the middle of the side, and ter- 

 minates in a round blackish spot at the root of the caudal. 



XXXI. — Descriptions of some new Species of Reptiles from 

 Madagascar. By Dr. Albert Gunther, F.R.S., Keeper 

 of the Zoological Department, British Museum. 



[Plate XVI.] 



The novelties described in this paper were contained in 

 some small collections recently received by the British Museum 

 from Madagascar. As regards the localities, J\l. Grandidier 

 has kindly informed me that Anzahamaru is the name of a 

 small village, most probably close to Mahanoro, and that it is 

 a- name very common throughout Madagascar, meaning a loca- 

 lity where there are many country-houses. Malianoro is a 

 short distance south of Taraatave. 



Acontias holomelas. (PI. XVI. fig. A.) 



Middle of the body surrounded by 31 series of scales ; 140 

 scales in the series running from the chin to the vent. Length 



