8 Journal of the Asiatic Society of Bengal. (January, 1906. 
2. Two New Oyprinoid Fishes from the Helmand Basin.—By 
C. Tate Recan, B.A. Communicated by Ligut.-Cotonen A. W. 
Axcock, C.LE., F.R.S, 
[The Fishes collected in the affluents of the Helmand by Colonel Sir A. H. 
McMahon, K.C.I.E, C.S.I., and the officers of the Seistan Arbitration 
Commission, have, by the kindness of Messrs. G. A. Boulenger, F.R.S 
C. Tate Regan, of the British Museum, been identified as follows :— 
Discognathus variabilis, Heckel; Scaphiodon macmahoni, n. sp.; Schizo 
pygopsis stoliczke, Stdr.; Nemachilus stenurus, Herz. ; and Nemachilus 
rhadinzeus, n. sp.—A, W. A. }. 
SCAPHIODON MACMAHONI, sp. nov. 
Depth of body 3% to 34 in the length, length of head 
41 to 42. Snout obtuse, shorter than the postorbital part of head. 
Diameter of eye 4 to 44 in the length of head, interorbital width 
22 to 23. outh inferior; lower jaw with nearly straight 
transverse anterior edge; barbel originating directly below the 
nostrils, shorter than the eye. Scales 37-393, 4 between lateral 
lower part of abdomen small or rudimentary. Dorsal II 
10, its origin equidistant from tip of snout and base of caudal; 
t sim moderately strong, serrated in its basal" half, 
ray ; free edge of the fin straight. Anal III 6-7, the second 
branched ray a little longer than the first or the third and twice 
as long as the last, as long as or a little longer than the longest 
dorsal ray. Pectoral a little shorter than the head, extending 
2 or $ of the distance from its base to the base of ventral. 
Ventrals originating below the first branched ray of the dorsal, 
near. 
somewhat dusky. 
Two specimens, 70 and 110 mm. in total length. The 
—— with tubercles on the snout and on the rays of the anal 
n, 
Cyprinion kirmanense Nikolski, 1899, appears to be allied 
to this species, but differs at least in the larger eye, the thick and 
strongly serrated last simple dorsal ray, the form of the dorsal 
fin and the coloration. 
NEMACHILUS RHADINZUS, sp. nov. 
Dep y 
Depth of head } to ¢ its breadth, which is 14 to 14 in its length. 
Ses eons EN AS ieee 
