| OCR Text |
Show 4 2 H 5 H 6 784 MR. F. DAY ON THE FISHES OF YARKAND. [DeC. 5, while drawing attention to the same fact as occurring in specimens of this genus. Thus, in examining the following ten examples of O. richardsonii, Gray, in the British Museum, I found them as follows :- 4 specimens, in spirit, from 3*3 to 3*8 inches in length. Head from 4 to 4§ in the total. 1 specimen, in spirit, 4 inches in length. Head 4\ in the total. 1 „ >> y •» 1 „ stuffed, 10 „ 1 ,, ,, lo »> 1 ,, » 18 „ Of the Schizothorax, or more essentially mountain-Barbels, there are several species. 2. SCHIZOTHORAX CHRYSOCHLORUS. Bacoma chrysochlora, M'Clell. Cal. J. N. Hist. ii. p. 577. t. xv. f. 3. Schizothorax biddulphi, Gunther, Ann. & Mag. Nat. Hist. 1876, xvii. p. 400. B. iv., D.^, P. 18, V. 10, A. \, C. 20, L. 1. 110 to 120. Length of head 4f to 5|, of caudal 6 to 6£, height of body 6| in the total length. Eyes: diameter 5| (in a fish 7 inches long), 7 to 9 in the length of head, 2 to 2\ diameters from the end of snout, and the same apart. Upper surface of the head nearly flat; its width rather exceeds its height, and equals half its length. Snout rather compressed, and overhanging the upper jaw. Mouth directed forwards, horseshoe-shaped, the lower labial fold interrupted in the middle. The maxilla reaches to below the front nostril. The depth of the cleft of the mouth equals the width of its gape. A very thin horny covering to the inside of the lower jaw. Posterior edge of opercle cut square. Barbels: the rostral ones as long as the eye, the maxillary rather longer, sometimes twice as long, and reach to beneath the middle or hind edge of the orbit. Teeth pharyngeal 5, 3, 2 . 2, 3, 5, pointed, and with rather compressed summits. Fins : the dorsal, which is as high as the body, arises midway between the end of the snout and the base of the caudal, its last undivided ray osseous, strong, finely serrated posteriorly, from a little longer than the head, in a specimen 119 inches iu length, to |- the length in the adult. Pectoral as long as the head excluding the snout; it reaches halfway to the base of the anal. Anal, when laid flat, reaches about halfway to the base of the caudal, which latter fin is forked. Scales : the row which bears the lateral line consists of larger scales than those above or below it; those forming the anal sheath are equal to half a diameter of the eye. Colours: greyish along the back, becoming yellowish-white on the sides and beneath ; a black mark over the eye, and a few dull spots on the back. Hab. Kashgar, Yankihissar, and Yarkand, up to 20 inches in length. |
