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Show 798 MR. F. DAY ON THE FISHES OF YARKAND. [Dec. 5, the broken state of its caudal fin, must be accepted as the reason why m y proportion of the free portion of the tail does not agree with Dr. Giinther's (nearly |) ; whilst I find the caudal fin emarginate, and not "rounded." 19. NEMACHEILUS GRACILIS, sp. nov. B.iv., D.f, P. 13, V. 8, A. | C. 17. Length of head 5|, of caudal 64;, height of body 6^- in the total length. Eyes: diameter 11 in length of head, 4 diameters from end of snout, and 2\ apart. Snout overhanging the mouth. The greatest width of the head equals its height or its length excluding the snout. Lips thickened; lower labial fold interrupted in the middle and rather lobed on either side. Barbels six; the maxillary ones nearly twice as long as the eye; the external rostral ones reach the hind nostril; the other pair are shorter. Fins: dorsal commences midway between the eye and vertical border of the preopercle ; its upper edge is nearly straight; it is not quite so high as the body below it, and one fourth less than the extent of its base. Pectoral as long as the head behind the angle of the mouth; it reaches rather above halfway to the base of the ventral, which latter fin arises somewhat in advance of the commencement of the dorsal; it is of about the same length as the pectoral, and extends halfway to the anal. Anal twice as high as wide at its base ; it reaches, when laid flat, a little more than halfway to the base of the caudal, which is slightly emarginate. Free portion of the tail half as high at its base as it is long. Scales absent. Colours: brownish along the back, becoming yellowish beneath; dorsal and caudal with dull spots. Hab. Basgo, on the head-waters of the Indus. 20. NEMACHEILUS MARMORATUS. Cobitis marmorata, Heckel, Fische Kasch. p. 76, t. xii. figs. I & 2; Hiigel, Kaschm. iv. p. 380. Cobitis vittata, Heckel, I. c. p. 80, t. xii. figs. 3 & 4 ; Hiigel, /. c. p. 382. Nemachilus marmoratus, Giinther, Cat. vii. p. 356. B. iv., D.f, P. 11, V. 7, A. \, C. 17. Length of head 4f to 5, of caudal 7, height of body 7 in the total length. Eyes: diameter 5 in length of head, 2 diameters from end of snout, and 1^ apart. Snout somewhat pointed; and in some the preorbital is slightly projecting. Lips wrinkled; the lower labial fold interrupted. The greatest width of the head equals its height or its length excluding the snout. Barbels : the maxillary ones reach to below the hind edge of the eye ; the rostral ones are nearly as long. Fins : dorsal commences midway between the end of the snout and the base of the caudal; its upper edge is nearly straight, oblique, and with rounded angles ; its height rather exceeds that of the body below it; and it is nearly twice as high as its base is long. Pectoral as long as the head excluding the snout, and extending halfway to the ventral. Ventral one third shorter than |