FAMILY, V— CYPRINID^. 545 



25. Labeo kawrus, Plate CXXXI, fig. 5. 



? Chondrostoma Jcawrus, Sykes, Trans. Zool. Soc. ii, p. 358, pi. 62, f. 2 ; Bleeker, Beng. p. 25 ; Jerdon, 

 M. J. L. and Sc. 1849, p. 308. 



B. iii, D. 11 ff), P. 17, V. 9, A. 7(1), C, 19, L. 1. 38, L. tr. 6/6. 



Length of head 5|- to 6, of caudal 4i- to 4|, height of body 5i to 5^ in the total length. Eyes— diameter 

 3^ to 3f in the length of' the head, 1 diameter from the end of snout, and 1^- apart. Dorsal and abdominal 

 profiles about equally convex. Width of the head equals its length behind the middle of the eyes. Snout very 

 obtuse and not overhanging the jaws. The cleft of the mouth commences below the level of the lower edge of 

 the eye. Lips continuous at the angle of the mouth, the lower one very thin and reflected off the mandible, 

 which is rounded and has a thin cartilaginous covering : edges of lips smooth. No tubercles on the snout. 

 Barbels— a, minute maxillary pair. Teef/i— pharyngeal, plough-shaped, 5, 4, 3/3, 4, 5. Fins — dorsal commences 

 midway between the end of snout and the posterior extremity of the base of the anal fin, it is rather higher 

 than the head is long, its upper edge is concave. Pectoral nearly as long as the head. Caudal deeply forked. 

 Lateral-line — rather indistinct in some specimens : 4 j rows of scales between it and the base of the ventral fin. 

 Colours — silvery, dorsal and caudal fins externally stained with gray : sometimes a dark blotch on the scales 

 near the commencement of the lateral-line. 



This fish, which is from the Deccan, agrees fairly with Sykes' description and figure. His specimen 

 had no lateral-line. 



Habitat. — Poona and the Deccan : the specimen figured (7 inches long) was from Poona. 



Genus, 10 — Osteochilus, Giinther. 



Rohita, sp. Cuv. and Val. 



Abdomen rounded. Mouth of moderate width, directed more or less downwards : lips thickened, continuous, 

 fringed or crenulated, the lower beiri}/ reflected from off the mandible, leaving it uncovered in the form of a sharp and 

 hard, transverse, prominence. No tubercle at symphysis. Snout obtusely rovmded. Barbels, four or tiuo. 

 Pharyngeal teeth 5, 4, 2/2, 4, 5. Dorsal fin without osseous ray, with a moderate 7iumber of branched ones (10 to 

 about 20). commencing in advance of the ventrals. Anal with few rays. Scales of moderate or small size : no tiled 

 row at base of anal fin. Lateral-line passing to the centre of the base of the caudal fin. Gill-rakers short. 



Geographical distribution. — Burma and the Malay Archipelago. 



SYNOPSIS OF SPECIES. 



1. Osteochilus rostellatus, D. y\. A, |, L. 1. 54. Four barbels. Colours uniform. Burma. 



2. Osteochilus Neilli, D. xf-fir' ^- -/5, L. 1. 34. Four barbels. A darkish band near commencement of 

 lateral-line, and a dark mark before base of caudal fin. Burma. 



3. Osteochilus cephalus, D. 3/13, A. 3/6, L. 1. 40. Two barbels. Colours uniform. Pegu. 



1. Osteochilus chalybeatus, Plate CXXIX, fig. 1. 



Mohita rostellatus, Cuv. and Val. xvi, p. 256. 



Bohita lineata, Cuv. and Val. xvi, p. 260. 



Bohita chalybeata, Cuv. and Val. xvi, p. 271 ; Bleeker, Beng. p. 133 (not syn.) 



Labeo chalybeatus, Giinther, Catal. vii, p. 60. 



Nga-leh, Burmese. 



B. iii, D. 20(tV), p. 18, V. 9, A. 7(|), C. 19, L. 1. .54, L. tr. 8/10. 



Length of head 5, of caudal 5, height of body 4^- in the total length. Eyes — diameter 4 in the length 

 of head, Ij diameters from the end of snout, and 2 apart. Dorsal profile more convex than that of the 

 abdomen, and rather concave over the orbits : the interorbital space nearly flat. The greatest width of the 

 head equals its length excluding the snout. Snout overhanging the jaws and without any lateral lobe. Mouth 

 rather narrow, its width being about 1/3 of length of head. Lips thick and fringed, with an inner fold above 

 and below. Gill-rakers closely set and short. Barbels — the maxillary pair half as long as the orbit, the rostral 

 ones shorter. Fins — the dorsal commences midway between the end of the snout and the posterior margin of 

 the base of the anal fin, its upper edge is straight. Pectoral rather longer than the head excluding the snout, 

 it does not reach the ventral, nor the latter the anal. Anal laid flat just reaches the caudal, which is moderately 

 forked. Scales — six rows between the lateral-line and base of the ventral fin. Colours — gray, becoming lighter 

 below, narrow dark lines along the body : fins black. 



Habitat. — Irrawaddy and Salwein rivers in Burma. The specimen figured was from Moulmein. 



2. Osteochilus Neilli, Plate CXXX, fig. 2. 



Day, Proc. Zool. Soc. 1870, p. 99. 



B. iii, D. 17-18 (rl:h>), P- 15, V. 9, A. 7(1), C. 19, L. 1. 34, L. tr. 5^/6^. 



Length of head 5j, of caudal 4f to 5, height of body 3^- in the total length. Eyes — diameter 3 1 in the 



4 A 



