536 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxni. 



Family SILURID^. 



3. OMPOK BIMACULATUS (Bloch). 



Silu.nts bimaculatus Block, Ausl. Fisch., VIII, p. 24, pi. ccclxiv (Malabar). 

 Ompok sibtroides Lacepede, Poiss., V, p. 50. 



Callichroiis bimaculatus Bleeker, Atl. Ich., p. 84, pi. lxxvii, fig. 3 (Java). — 

 Day, Fishes of India, p. 476, pi. ex, figs. 4 and 5. — Gunther, Cat., V, p. 45. 



Head 4.60; depth 4.50; e^^e 5.50 in liead; snout 4; D. 4; A. 62; 

 v., 8; bands of fine, sharp-pointed teeth in jaws; vomerine teeth in a 

 single small patch on each side; maxillary extending to anterior mar- 

 gin of eye, lower jaw projecting; a single maxillary barbel on each 

 side, the tip of which extends to near posterior end of pectoral fin; 

 origin of dorsal fin directly above origin of ventrals; distance from 

 tip of snout to origin of dorsal, 2 in distance from origin of dorsal to 

 end of caudal vertebrae. 



Color in spirits, a dull grayish, a round dusky spot on anterior of 

 body slightly posterior to origin of lateral line. 



Two specimens, length 7.20-8.20 inches. 



The name Om/pok has priority over CnlUcJirous. 



4. HYPSELOBAGRUS MACRONEMUS (Bleeker). 



Bagrus viacronemHS, singaringan, und hetprnrvs Bleeker, Verh. Bat. Gen., XXT, 



1 Silur., 1846, p. 22 (Java). 

 Eypselohagrus macronema Bleeker, Atl. Irli., II, p. 58, pi. lxxiii (Java). 



Head 4.50; depth 4.20; eye 4 in head; snout 2.40; interorbital 3; 

 D.; I. 7; A. 11; adipose fin very long, its base 2.14 in length with- 

 out caudal; 4 barbels to each side, the maxillary barbels extending to 

 origin of anal fin; vomerine teeth united in a single band, similar to 

 teeth in jaws; origin of ventrals on a line with origin of adipose dorsal; 

 first s])ine of pectorals slightly serrate. 



One specimen, length 8.20 inches. 



5. HEMIBAGRUS PLANICEPS (Kuhl and Van Hasslt). 



Bagrus planireps Cuvier and Valenciennes, Nat. Hist. Poiss., XIV, p. 421 



(Java ) . 

 Heviibagrus plankrps Bleeker, Atl. Ich. >Silur., p. 5(i, pi. lxxi (Java). 

 Macrones planiccps GiJNTiiER Cat., V, p. 81 (Java and Sumatra). 



Head 4; depth 6.10; eye 6 in head; snout 2.75; interorbital 3 ; D.I, 

 8; A., 13; base of adipose fin, 1.50 in head; barbels, 4 on each side, 

 maxillary barbels extending to dorsal fin; vomerine teeth in a united 

 band; first spine of pectoral serrate; first dorsal spine slightly serrate. 



Color in spirits, grayish, an indistinct dusky spot on sides near 

 origin of lateral line. 



Six specimens, length 5 to 9.75 inches. 



