. Bulletin - United States National Museum. Science. 264 BULLETIN 18S, UNITED STATES NATIONAL MUSEUM circumscribed range in Thailand. It is in fact known from only two specimens, and cm. long, collected by R. Havmoller in Klong Sok, one of the headwaters of the Tapi River, southwest of Bandon, Peninsular Thailand, in December 1929. In these examples the brown longitudinal band, dark back, and black areas on the dorsal, anal, and ventral fins were sharply defined; the larger fish had the snout thickly beset with minute prickly tubercles, while in the smaller fish the tubercles were lo


. Bulletin - United States National Museum. Science. 264 BULLETIN 18S, UNITED STATES NATIONAL MUSEUM circumscribed range in Thailand. It is in fact known from only two specimens, and cm. long, collected by R. Havmoller in Klong Sok, one of the headwaters of the Tapi River, southwest of Bandon, Peninsular Thailand, in December 1929. In these examples the brown longitudinal band, dark back, and black areas on the dorsal, anal, and ventral fins were sharply defined; the larger fish had the snout thickly beset with minute prickly tubercles, while in the smaller fish the tubercles were lower and not prickly. The sharp line of demarcation between the snout and the upper lip shown in Weber and de Beaufort's figure of this species is absent in these specimens. EPALZEORHYNCHOS KALLIURUS, new species Figure 51 Description.—Moderately compressed; depth of body in stand- ard length, in length with caudal fin; least depth of caudal pe- duncle in its length and 2 in length of head; snout about 3 in head, slightly longer than eye; eye in interorbital space; a mod- erately wide free orbital margin; barbels short, rather stout, rostral barbel reaching beyond edge of upper lip and rather more than eye, maxilliary barbel less than rostral; upper lip with 14 plicae, each terminating in a free Figure 51.—Epaheorhynchos kalliurus, new species: Type ( No. 109764). Drawn by Mrs. Alice C. Mullen. Squamation: Tube-bearing scales in lateral line 28, tubes deficient on the black peduncular spot; scales in transverse series from mid- line of back to midline of abdomen , with 3 scales between lateral line and origin of ventral fin; predorsal scales 10; circum- peduncular scales 16. Fins: Dorsal origin much nearer to tip of snout than to base of caudal, over tenth scale of lateral line; margin of fin concave; dorsal rays iii,8, first branched ray slightly longer than head; caudal longer than head, forked for about its length, the


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