THE AFGHAN DELIMITATION COMMISSION. 109 



and of which I have specimens before me for comparison, have larger scales, or differ in 

 other respects. 



Beside this skin, Dr. Aitchison collected at Bezd, which lies on the Jam River, a 

 tributary of the Hari-rud in Khorasan, Persia, four smaller specimens, from four to five 

 inches long (fig. B), which I am inclined to refer to the same species ; they must 

 have been caught about spawning-time (15th of June, 1885), as they are covered with 

 granules of melanotic matter. 



6. Gobio gobio, L. 



Gobio fluviatilis (Flem.), var. lepidolcemus, Kessler, in Mem. Soc. d'Hist. Nat. Mosc. x. p. 15; and 

 Ichthyology of Turkestan, p. 19. 



One specimen from Kushk (Badghis). 



7. Nemachilus kessleri, sp. n. 



D. 9. A. 7. 



Scaleless. Caudal fin emarginate. The origin of the dorsal fin is nearly midway 

 between the root of the caudal and the end of the snout, and opposite to the base of the 

 ventral. The height of the body is one eighth, and the length of the head two elevenths 

 of the total length without caudal. The free portion of the tail is moderately broad, its 

 width being rather more than one half of its length. Eye small, one eleventh of the 

 length of the head. Snout shorter than the postorbital portion of the head. Pectoral 

 not quite as long as the head, half as long as the distance of its root from the ventral. 

 Upper margin of the dorsal fin oblique, straight, with the upper corner slightly rounded. 

 The markings of the body are rather indistinct, and concentrated on the back into twelve 

 somewhat irregular cross bands. A deep black spot on the base of the three anterior 

 dorsal rays, the upper part of the fin ornamented with one or two series of black specks 

 running parallel to the upper margin of the fin. Caudal fin with a narrow blackish 

 cross band on the root and with two more or less indistinct, oblique, series of black 

 specks. 



Eight specimens were collected at Nushki, of which the largest is only twenty-eight 

 lines long. 



EXPLANATION OE PLATE XII. 



Figs. A, B. Schizothorax raulinsii. 

 Fig. C. Cirrhina afghana. 



SECOND SERIES. — ZOOLOGY, VOL. V. 



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