772 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Body elongate. Head strongly depressed. Upper jaw protrudes. 

 Eyes lateral, with free orbital margin. Mouth arched, lips thin. 

 Only 1 barbel at each maxillary, very stiff and bony. Villiform 

 teeth in bands in jaws, on palate in 2 separated patches, obtusely 

 conic. Nostrils together, posterior with valves, placed superiorly 

 near front edge of snout. Gill membranes united, free hind border 

 deeply emarginate, only anteriorly connected with isthmus. Bran- 

 chiostegals 5. Top of head covered with smooth skin. Short 

 dorsal with 7 rays and pungent spine, placed between pectorals and 

 ventrals. Adipose fin short, opposite short anal. Caudal forked, 

 lobes rounded. Pectorals with pungent spine. Ventral rays 6. 



One species, marine, entering estuaries and tidal rivers. 



OSTEOGENEIOSUS MILITARIS (Linnaeus) 



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

 Asia) ; ed. 12, vol. 1, p. 503, 1766. — Bonnaterke, Tableau encyelop. Ichth., 

 p. 51, 1788 (Asia).— Gmelin, Syst. Nat. Linn., vol. 1, p. 1356, 1789.— Wal- 

 BAUM, Artedi Pise, vol. 3, p. 566, 1792 (on Linnaeus). — Bloch, Naturg. 

 ausland. Fische, vol. 8, p. 19, pi. 362, 1794 (Asia). — Shaw and Nodder, Nat. 

 Misc., vol. 11, pi. 406, 1800 ("Surinam"). — Schneider, Syst. Ichth. Bloch, p. 

 375, 1801 ("Surinam"). 



Ageniosus militaris Swainson, Nat. Hist. Animals, vol. 2, p. 305, 1839 (on 

 Bloch). 



Arius militaris Valenciennes, Hist. Nat. Poiss., vol. 15, p. 114, pi. 430, 1840 

 (Bombay, Mahe, Malabar, Pondicherry, Irrawaddy, Rangoon, Malacca). — 

 Cantor, Journ. Asiatic Soc. Bengal, vol. 18, p. 1241, 1849 (Malayan Penin- 

 sula and Islands). 



Osteogeneiosus militaris Bleeker, Atlas Ichth. Ind. Neerlaud., vol. 2, p. 46, 1862 

 (on Valenciennes).— Weber and Be:aufoet, Fishes Indo-Australian Archi- 

 pelago, vol. 2, p. 329, fig. 142, 1913 (Java Sea ; Bagan Si Api Api, Sumatra).— 

 Haedenberg, Treubia, vol. 13, livr. 1, p. 117, 1931 (Bagan Si Api Api).— 

 SuvATTi, Index Fish. Siam, p. 64, 1937 (Maenara Bangpakong; Gulf of 

 Siam ; Tliale Sap ; Chumphon ; Pakphun ; Laem Sing ; Samat Prakan ; 

 Bandon Bight ) .—Fowlp:r. List Fish. Malaya, p. 48 (248), 1938 (reference). 



Osteogeniosus militaris Gxjnther, Cat. Fishes British Mus., vol. 5, p. 181, 1864 

 (Ganges; type of Osteogeneiosus cantoris) — Kner, Reise Novara, Fische, 

 p. 314, 1865 (no locality).— Day, Fishes of Malabar, p. 181, 1865.— Bavean, 

 Fresh Water Fishes India, p. 144, 1877 (Ganges River). — Day, Fishes of 

 India, pt. 3, p. 469, pi. 108, fig. 4, 1877 (Bombay) ; Fauna Brit. India, 

 Fishes, vol. 1, p. 190, 1889.— Babtlett, Sarawak Gazette, vol. 26, No. 368, 

 p. 182, 1896 (Moratabas). — Duncker, Mitt. Naturhist. Mus. Hamburg, vol. 

 21, p. 174, 1904 (Muar River). 



Osteogeneiosus macrocephalus Bleeker, Nat. Geneesk. Arch. Neder.-Indie, vol. 

 3, pt. 2, p. 173, 1846 (type locality: Batavia) ; Atlas Ichth. Ind. N^erland., 

 vol. 2, p. 47, pi. (16) 64, 1862 (Java, Madura). — FowleTv, Journ. Bombay 

 Nat. Hist. Soc, vol. 32, 255, 1927 (Bombay). 



Osteogeniosus macrocephalus Gunther, Cat. Fish. Brit. Mus., vol. 5, p. 182, 

 1864 (type). 



Osteogeneiosus longiceps Bleeker, Nat. Geneesk. Arch. Neder.-Indie, vol. 3, pt. 

 2, p. 174, 1846 (type locality: Batavia). 



