211 



of rays (10-12). Caudal forked. Air-bladder in two rounded 

 portions each of which is enclosed in bone. 



Geographical Distribution. Small fishes found in the Indus, 

 Jumna, Ganges, and Bengal rivers. 



This genus differs from Gagata in its barbels not being placed 

 in a transverse line behind the chin ; and in its gill-membranes 

 not being confluent with a broad isthmus but rather deeply notched. 

 It is allied in some respects to Macrones, but has no teeth on the 

 palate, whilst its air-bladder is enclosed in bone. 



Synopsis of Indian Species. 



D. , A. 10-11. Muddy colour 1. N. buchanani, p. 211. 



D. i, A. 11-12. Coppery, glossed with gold 



and; having black blotches 2. N. punctata, p. 212. 



D. I, A. 11. Two greenish bands descend 



from the back 3. 2V. viridescens, p. 212. 



226. (1.) Nangra buchanani. 



Pimelodus nangra, Ham. Such. Fish. Ganges, pp. 193, 378, pi. xi, 



tig. 63. 

 Naugra buchanani, Day, Fish. India, p. 494, pi. cxiii, fig. 3 (see 



synon.). 



D. 1/8 | 0. P. 1/9. V. 6. A. 10-11 (2-3/8-9). C. 17. 



Length of head and caudal fin from 4| to 5, height of body 6 in 

 the total length. Eyes rather high up, in the anterior half of 

 the head and covered with skin, 1| diameters from the end of 

 snout. The greatest width of the head equals its length excluding 

 the snout. Upper jaw considerably the longer, snout rather de- 

 pressed, mouth wide. Median longitudinal groove deep, ex- 

 tending to the occipital process up which it is continued; the 

 occipital process three times longer than wide at its base and 

 extending to the basal bone of the dorsal fin. Barbels the nasal 

 longer than the head, the maxillary reach the vent, or even the end 

 of the anal fin, the outer maudibular the base of the ventral 

 and the inner (which arise farther forward than the outer pair) 

 the base of the pectoral. Teeth none on the palate. Fins 

 dorsal spine weak and entire, half as long as the head in the 

 very young, longer in larger specimens ; the length of the base of 

 the adipose dorsal equals that of the anal, or the interspace 

 between the commencement of the adipose and the end of the base 

 of the rayed fin; pectoral spine moderately strong, with nine 

 coarse denticulations internally, and as long as the head without 

 the snout ; caudal deeply forked, lobes of equal length and pointed. 

 Air-bladder in two oval portions, each of which is enclosed in a 

 thin bony capsule which has a round orifice on the outer side. 

 Colour muddy, with three indistinct vertical greenish half- 

 bands. 



Uab. Ganges, Jumna, and ludus ; attaining two inches in length. 



p2 



