10 



SECOND YARKAND MISSION. 



Largest specimen 8'5 inches in length. There is also a specimen from Balakchi, the streams 

 there apparently flowing towards the Yarkand River, which goes to the east. 



14. DIPTTCHUS MACULATTJS. Plate II, fig. 3. 



Diptychus maculatiis, Steindachner, Verb. z.-b. Ges. Wien., 1866, p. 787; Giinther, Cat. vii., p. 

 171. Day, Proc. Zool. Soc., 1876, p. 792. 



Diptychus severzowi, Kessler, Fish. Turkestan, p. 17, t. iv, f. 12. 



B. iii, D. g, P. 19, V. 9, A. I C. 19, L. 1. 80-90. 



Length of head 5 to 6, of caudal 5 to 6 ; height of hody 7J to 8 in the total length. 

 Eyes : diameter 4| in the young to 6 in the adult in the length of the head, 1J to 2 diameters 

 from the end of snout, and 1^ apart. The greatest width of the head equals its height, or its 

 length behind the front edge or middle of the eyes. Mouth transverse, inferior, having an 

 anterior sharp horny covering on the lower jaw. Lower labial fold interrupted in the middle. 

 Barbels : one at each maxilla, having thick bases, and hardly so long as the eye. Teeth 

 pharyngeal, 4, 3, 3, 4, curved at the outer extremity and pointed. Fins: the dorsal 

 commences rather nearer the snout than the base of the caudal, its upper edge is straight ; 

 it is as high as the body below it, its last undivided ray articulated. Pectoral not quite so 

 long as the head ; it reaches rather above half-way to the ventral, which latter commences 

 on a vertical line below the last dorsal ray ; it reaches rather above half-way to the base of 

 the anal. Anal when laid flat reaches the base of the caudal ; its height is nearly three 

 times the length of its base. Scales not imbricated, but scattered over the upper two- 

 thirds of the body and pectoral region, in which latter locality the skin is often rugose : 

 the tiled row well developed. Free portion of the tail one-half longer than high at 

 its base. Colours bluish, lightest inferiorly, indistinctly blotched and spotted along the 

 upper half of the body ; often a narrow, dull band along the lateral line, and a second 

 below it. The dorsal and caudal fins much spotted in some specimens. 



The very young are destitute of scales ; they first appear along the lateral line. One 

 specimen from Basgo, I'l inch long, has no barbel on the left side. There are two specimens 

 from the west of Sarikol : one has an adipose lid, covering the anterior half of the left eye ; 

 the other has a similar lid covering the lower half of the left eye. Brown tubercles are com- 

 mon on some of the specimens, and do not appear to be normal. Some specimens from Leh 

 have the eye small. 



Diptychus severzowi, from the Rivers Aksai and Ottuck appears to be the above species. 



Sab. Specimens were brought from Kharbu, Basgo, Snima, Leh, Tankse, and Chagra, 

 from waters going directly or indirectly to the' Indus ; from Pasrobat (9,370 feet), and 

 Tarbashi (11,515 feet), whence the waters go to the Yarkand River; also from west of 

 Sarikol, which goes to the same river. Some specimens are also labelled as from Chiliscomo. 



This fish has also been captured in other parts of Tibet, and likewise in Nepal. 



15. LABEO SINDENSIS. Plate II, fig. 4. 



CirrAina sindensis, Day, Proc. As. Soc., Beng., 1872, p. 319. 



B. iii, D. 12-13, P. 18, V. 9, A. 7, C. 19, L. 1. 43, L. tr. 8-9. 



Length of head 6{-, of caudal 4| ; height of body 5-L in the total length. Eyes : diameter 

 5| in the length of the head, 2 diameters from the end of the snout, and 2 apart. Snout 



