540 PHTSOSTOMI. 



12. Labeo cseruleus, Plate CXXIX, fig. 3. 



B. iii, D. 14(A), P- 18, V. 9, A. 7(f), C. 19, L. 1. 40, L. tr. 6/11. 



Lenffth of head 4|, of caudal U, height of body 4 in the total length. Eyes— 4 diameters in the length 

 of head 1 diameter from the end of snout, and 2 apart. Interorbital space shghtly convex. The greatest 

 width of the head equals its length excluding the snout. Mouth narrow, its width equallmg 2/7 of the length 

 of the head Snout overhanging the mouth : no lateral lobe. Lips continuous, and having a distinct mner 

 fold in their entire circumference : both lips fringed. A horny inner covermg to either lip. Barbels— ^o 

 rostral ones a short pair to the maxilla, ii'/zis— dorsal arises anterior to the ventral, and slightly nearer to the 

 end of the snout than the base of the caudal fin, anteriorly 2/3 as high as the body, its upper edge concave 

 Pectoral as long as the head excluding the snout, it does not reach the ventral nor the latter the anal. Anal 

 when laid flat reaches the base of the caudal which is deeply forked. LatemUme—6 rows of scales between it 

 and the base of the ventral fin. Colours— hhiish with a yellowish tmge on the sides and beneath. Outer halt 

 of anal nearly black, and a blackish lunule on the caudal. _ , ■ , . ^ j ,-r • 



Eabitut.—RiYeT at the base of the Sind Hills. A single specimen obtained, which is fagured hte-size. 



13. Labeo diplostomus, Plate CXXIX, fig. 2. 



r Cyprinus dero. Ham. Buch. Fish. Ganges, pp. 277, 331, 385, pi. 22, fig. 78 (young). 



Varicorhinus diplostomus. Heck., Fish. Kaschmir, p. Ql, t. 11. 



Cyprinus (Bangana) falcata, Gray and Hard. 111. Ind. Zool. 



(?o6io ?rtrt?acostoTO!ts, ilcClelland, Ind. Cyp. p. 280. . 



Labeo diplostomus and malacostomus, Cuv. and Val. xvi, pp. 360 and 365 ; Gunther, Catal. vii, p. 57. 



TylognatJms Valenciennesii, Heckel, in Hiigel's Reise, iv, p. 378, and in Russ. Reisen, ii, p. 283. 



Gobio ricnorhynchus, McClelland, Ind. Cyp., pp. 279, 363, pi. 56, f. 1 ; Cuv. and Val. xvi, p. 464. 



Lobocheilos ?falcatus and rienorhynehus, Bleeker, Beng. p. 66. 



Labeo ncnorhymhus, Giinther, Catal. vii, p. 57 ; Day. Proc. Zool. Soc. 1869, p. 373. 



Nepura, Assam ; Kul-ka-baUa, Beng. ; Gid and Giddah, Punj. ; Mohaylee, Hmd. (Hnrdwar) and Gaywah, 

 Seharanpore. 



B. iii, D. 12-13 (/.-tV), P- 17, V. 9, A. 7 (|), C. 19, L. L 41-44, L. tr. 8/9. 



Length of head 5^ to 6i, of caudal 5, height of body 5 to 5i in the total length. %es— situated 

 either in, or (in the young) rather before the middle of the length of the head, diameter 5 to 6^ m 

 the total'length of head, and 2i to 3 diameters apart. Greatest width of the head equals its length excluding 

 the snout. Dorsal profile more convex than that of the abdomen. ]\Iouth rather narrow, snout overhanging 

 the laws, generally with a groove across it, and covered with pores : no lateral lobe. Lips thick and 

 continuous, but the fold across the lower jaw is interrupted. A cartilaginous layer on inside of both lips. 

 Gill-rakers, closely set, about 1/3 as long as the eye. Barbels— a, small maxillary pair. Tee^/i— pharyngeal, 

 plouo-h-shaped, 5, 4, 2/2, 4, 5. i^wis— dorsal arises midway between the front of the snout and the end 

 of the base of the anal fin, its upper edge is slightly concave in the young, becoming deeply so in the adult. 

 Pectoral does not extend to the ventral, nor the latter to the anal. Caudal deeply forked, the upper lobe the 

 lono-er : its central rays being about 1/3 the length of the outer ones m the young, 2/7 m the adult. 

 Scales— 6 to 7 rows between the lateral-line and base of the ventral fin. Colours— grayish, darkest along the 

 back, each scale tinged with red : a darkish band along the side, or short gray bars passing to the lateral-line. 

 Fins 'with a faint reddish hue. Outer edge of dorsal rather stained. 



Hamilton Buchanan I.e. observes of C. dero " at each corner of the mouth is a minute tendnl," thus 

 showinf the figure to be incorrect on this point. I have the young from Goalpara having the same proportions 

 as given in H. B.'s figure. The specimen in the British Museum, Catal. of Cirrhina dyochila, " a. 4^ inches long. 

 Cachar," is likewise identical. 



Eahitat.— Along the Sind hills and Himalayas, also in the Brahmaputra in Assam. 



14. Labeo dyocheilus, Plate CXXX, fig. 1. 



Cyprinus dyocheilus, McClelland, Ind. Cyp. pp. 268, 330, t. 37, fig. 1 ; Cuv. and Val. xvi, p. 461. 



.*" Gobio bicolor, McClelland, 1. c. pp. 278, 360^ t. 40, f. 1 ; Cuv. and Val. x^-i, p. 462. 



Cirrhina dyocheilus, Giinther, Catal. vii, p. 37. 



Labeo falcdtus, Giinther, Catal. vii, p. 58 (not Bloch, or Gray and Hardwicke). 



Boalla, Hind. ; Heel-gorya, Assamese ; Nii-ga-dee, Sind. 



B. iii, D. 13 (tV), P- 17, V. 9, A. 7 (f), C. 19, L. 1. 43, L. tr. 8i/7i. 



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

 commenceinent of the posterior 1/2 of the'head'in the young, still further back in the adult : diameter from 6 

 to 9 in the length of the head, and from 3i to 5 apart. Width of head equals 2/3 of its length : its lower 

 surface being very broad and flat. Snout conical, projecting, and with a distinct lateral lobe (m General 



