SILUUID.E. 123 



in skin, having one spine and six rays. Pectoral with a concealed 

 spine. Ventral with six rays, inserted behind the vertical from 

 the posterior margin of the rayed dorsal. Anal rather short (9 to 

 12 rays). Caudal forked. Air-bladder almost entirely enclosed 

 in bone. No axillary pore. 



Geographical Distribution. Small fishes inhabiting the fresh 

 waters of India and Burma, usually on or near hills. Griffith 

 observed (Cal. Journ. N. Hist, ii, p. 564) respecting certain fish 

 from the Mydan valley in Afghanistan, " the most remarkable fish 

 is a dark-coloured loach-like Silurus, which is not uncommon about 

 Julraiz." 



I have a large series of this fish, and they show such diversities 

 that it appears to me that all are varieties of one species. 



131. (1.) Amblyceps mangois. (Fig. 52.) 



Pimelodus mangois, Ham. Buck. Fish. Ganycs, pp. 199, 379. 

 Amblyceps mangois, Day, Fish. India, p. 490, pi. cii, fig. 0, and 

 pi. cxvii, tig. 1 (see synon.). 



liilli, " a cat," and Sudani, Punj. 



B. xii. D. 1/6 | 0. P. 1/7. V. 6. A. 9-12 (2-3/7-9). C. 19. 

 Vert. 12/23. 



Length of head 6, of caudal fin 6, height of body 7 to 9 in the 

 total length. Eyes small, situated in the anterior two fifths of 

 the hend. Mouth wide, lower jaw somewhat the longer. Barbels 

 nasal as long as the head, and equalling the internal mandibular 



Fig. 52. Ambtycc, s mangois. 



pair, the maxillary reach the end of the pectoral spine, while the 

 outer mandibular are not quite so long. Fins dorsal not so 

 high as the body, and situated in the commencement of the second 

 fifth of its total length, dorsal spine about half as high as the 

 rays ; the latter are partly enveloped in skin, as are also those of the 



