. Bulletin - United States National Museum. Science. FRESH-WATER FISHES OF SIAM, OR THAILAND 243 craterlike depressions, a deep horizontal groove on each side dividing the tubercles into groups with two rows in each group, the upper group consisting of a central part and a lateral part that extends backward as far as nostrils, the lower group reaching halfway to corner of mouth; eye small, five in head, in snout and in the broad slightly convex interorbital space, placed in upper half of head and nearer to posterior margin of head than to tip of snout; mouth occu- pying full width of head,
. Bulletin - United States National Museum. Science. FRESH-WATER FISHES OF SIAM, OR THAILAND 243 craterlike depressions, a deep horizontal groove on each side dividing the tubercles into groups with two rows in each group, the upper group consisting of a central part and a lateral part that extends backward as far as nostrils, the lower group reaching halfway to corner of mouth; eye small, five in head, in snout and in the broad slightly convex interorbital space, placed in upper half of head and nearer to posterior margin of head than to tip of snout; mouth occu- pying full width of head, twice diameter of eye; upper lip thick, its base partly covered centrally by the pendulous rostral fold, the free edge of which is entire, superficial part of lower lip thick, ellipsoidal, anteriorly papillose, its antero-posterior diameter equal to eye, deep j)art of lower lip closely adherent to lower jaw, which has a prominent horny sheath; a pair of maxillary barbels less than diameter of eye; pharyngeal teeth 5,4,2-2,4,5, slender, compressed, crowded feebly un- cinate, with narrow grinding surface; gill rakers short, slender, feeble, about 5 + 31 on first Figure 44.—Lobocheilus cornutus, new species: Type ( No. 107957). Drawn by- Mrs. Alice C. Mullen. Squamation: Tubule-bearing scales in lateral line 35; scales in trans- verse series from midline of back to midline of abdomen , with scales between lateral line and base of ventral fin; predorsal scales 11; rows of scales around narrowest part of caudal peduncle 16. Fins: Origin of dorsal fin over tenth scale of lateral line, well in advance of ventrals; dorsal emarginate, rays iii,8, longest branched ray head; caudal deeply forked, lobes pointed, longer than head; anal emarginate, rays iii,5; ventrals arising under twelfth scale of lateral line, longest ray in l?ead; pectorals slightly longer than ventrals. Coloration: Silvery brown on back and sides, under parts whitish; five narrow dar
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
