736 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Clarias nieuJiofii Bleekee, Atlas Ichth. Ind. N(?erland., vol. 2, p. 105, 1862 (Java, 

 Sumatra, Banka, Bilitoii, Borneo). — Peters, Monatsb. Akad. Wiss. Berlin, 

 1868, p. 271 (Luzon). — Vincigueril^s., Ann. Mus. Civ. Stor. Nat. Geneva, vol. 

 16, p. 166, 1S80 (Borneo). — Wbbeb and Beaufobt, Fishes Indo-Australian 

 Archipelago, vol. 2, p. 189, 1913 (East Indies, Malacca, Philippines). — Roxas 

 and Maktin, Dept. Agr. Comm. Manila, Tech. Bull. 6, p. 47, 1937 (refer- 

 ence). — Fowler, List Fish. Malaya, 1938, p. 44(247) (reference). 



Phagorus nieulwfii Fowler, Proc. Acad. Nat. Sci. Philadelphia, 1905, p. 461 

 (Borneo) ; 1915, p. 228 (same example). 



Clarias pentaptertis Bleekee, Nat. Tijdschr. Nederland. Indie, vol. 2, p. 206, 

 1851 (Bandjermassin, in rivers and marshes, Borneo). 



Clarias gilli Smith and Seale, Proc. Biol. Soc. Washington, vol. 19, p. 74, figs. 

 a— b, 1906 (type locality: Rio Grande, Mindanao). — Herre, Philippine Journ. 

 Sci., vol. 24, p. 700, 1924 (Tatuan, Mailag, Santa Fe, Lake Batu) ; Proc. Pan 

 Pacific Sci. Congr., Australia, vol. 2, 1923, p. 1570, 1924 (Lake Bato and 

 Bicol River, Luzon) ; Fish. Herre Philippine Exped. 1931, p. 23, 1934 (Fort 

 Pikit, Cotabato). — Roxas and Martin, Dept. Agr. Comm. Manila Tech. Bull. 

 6, p. 47, 1937 (reference). 



Depth 814; head to hind opercle edge 614, width equals length, 

 11/^ in length to hind edge of occipital process. Snout 2% in head 

 to hind opercle edge ; eye 13, 414 in snout, 5% in interorbital ; mouth 

 width 21/4 in head to hind opercle edge; nasal barbel reaches hind 

 edge of gill opening, maxillary reaches beyond pectoral tip for 

 space equal to that between front nostril and eye; outer mental 

 reaches tip of pectoral spine, inner mental to gill opening ; broad 

 bands of fine pointed teeth in each jaw, in 5 or 6 irregular rows; 

 broad triangular patch of similar teeth; front nostril at last third 

 of snout as seen in profile; interorbital 21/10 in head to hind gill 

 opening, broad, very slightly convex; front fontanel twice eye 

 diameter, its front edge opposite hind eye edge and hind fontanel 

 % front one, opposite pectoral origin; predorsal 2% in head from 

 occipital process. Gill rakers 5 + 17, lanceolate, subequal with gill 

 filaments or twice eye. 



Skin smooth, also over entire top of head. 



D. 86, last ray half joined with caudal basally, fin height 2I/3 in 

 head to hind gill opening; A. about 72, fin height 2I/2, free from 

 caudal; caudal 11^4 in head, convex behind; least depth of caudal 

 peduncle 3i^; pectoral 1%, spine II/2 in fin, smooth; ventral 3. 



Generally uniform olivaceous in alcohol. 



British Malaya, East Indies, Siam, Philippines. 



A.N.S.P. No. 20350. Knapei or Sebroeang, Borneo. N. Chaper. Museum of 



Paris. E. D. Cope. Length, 347 mm. 

 5170. Iloilo market. June 1, 1908. Length, 228 mm. 



CLARIAS BATRACHUS (Linnaeus) 



Silurus hatrachus Linnaeus, Syst. Nat., ed. 10, vol. 1, p. 305, 1758 (type locality: 

 In Asia, Africa) ; ed. 2, vol. 1, p. 502, 1766. — Bonnateere, Tableau Bncyelop. 

 Ichth., p. 1.51, 1788 (Asia, Africa).— Gmklin, Syst. Nat. Linn., vol. 1, 



