760 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Skin smooth. Few venules on side of head and front of lateral 

 line. Lateral line complete anteriorly, in young many short waved 

 venules. 



D. I, 7, compressed spine with antrorse serrae alonjj front and hind 

 edges, with age most of lower serrae as granules, first ray ly^ in 

 head to 3% in combined head and body with age ; A. vn, 13 or 14, first 

 branched ray 1% to 1% in head ; adipose fin large, 2 in head ; caudal 

 1, forked; least depth of caudal peduncle 3% to 4; pectoral 1 to 1%, 

 spine with antrorse serrae along both edges, 12 to 17 on inner; 

 ventral 1% to 1%. 



Back dusky brown, lower surfaces white or soiled brownish. 

 Young with back drab gray clouded with brownish, also along lower 

 side of trunk and tail obscure brownish dustings. Fins all pale, 

 blackish terminally with age. Barbels dusky, 



India, Burma, Siam, East Indies. 



2 examples. A.N.S.P. Bombay, India, 1925. Prof. F. Hallberg. Length, 

 90-163 mm. 



TACHYSURUS VENOSUS (Valenciennes) 



Arius venosus Valenciennes, Hist. Nat. Poiss., vol. 15, p. 69, 1840 (type locality: 

 Manila). — Bleeker, Atlas Icbth. Ind. Neerland., vol. 2, p. 33, pi. (6) 54, 

 fig. 1, 1862 (Java, Madura, Bintang, Banka, Singapore). — Gijntheb, Cat. 

 Fishes British Mus., vol. 5, p. 159, 1864 (East Indies ) .—Day, Fishes of 

 India, pt. 3, p. 460, pi. 106, fig. 2, 1877 (Nicobars) ; Fauna British India, 

 Fishes, vol. 1, p. 176, 1889. — DtJNCKER, Mitt. Naturhist. Mus. Hamburg, vol. 

 21, p. 174, 1904 (Kuala Salangor). — ^Webeb and Beaufort, Fishes Indo- 

 Australian Archipelago, vol. 2, p. 314, fig. 137 (dentition), 1913 (Balikpapan, 

 Borneo). — Roxas and Martin, Dept. Agr. Comm. Manila Tech. Bull. 6, p. 45. 

 1937 (reference). 



Tachystirus venosus Seale, Philippine Journ. Sci., vol. 5, p. 266, 1910 (Sand- 

 ak an). —Fowler, Journ. Bombay Nat. Hist. Soc, vol. 33, p. 104, 1928 

 (Bombay) ; Proc. Acad. Nat. Sci. Philadelphia, vol. 86, p. 93, 1934 (Bang- 

 kok). — Suvatti, Index Fish. Siam, p. 64, 1937 (Maenam Canthaburi). — 

 Fowler, List Fish. Malaya, p. 51, 1938 (reference). 



Bagrus sumatranus Benneh^t, Life of Rafiles, p. 691, 1830 (type locality: 

 Sumatra). 



Arius sumatranus GtJNTHER, Cat. Fishes British Mus., vol. 5, p. 162, 1864 

 (type).— Day, Fishes of India, pt. 3, p. 460, pi. 107, fig. 6, 1877 (type; 

 Andamans) ; Faima British India, Fishes, vol. 1, p. 176, 1889. — Bartlett, 

 Sarawak Gazette, vol. 26, No. 368, p. 182, 1896 (Buntal). 



Arius niicrouofacfuithiis Bleeker, Nat. Geneosk. Arch. Nederl.-Indie, vol. 3, pt. 

 2, p. 162, 1846 (type locality: Batavia). 



Arius manjong Bleeker, Nat. Geneesk. Arch. Nederl.-Indie, vol. 3, pt. 2, p. 164, 

 1846 (type locality: Batavia). 



Arius macruropterygius Bleeker, Nat. Gen. Arch. Nederl.-Indie, vol. 3, pt. 2, 

 p. 164, 1846 (type locality: Batavia). 



Ai'ius micruropterygiui^ Bleeker, Nat. Geneesk. Arch. Nederl.-Indie, vol. 3, pt. 

 p. 164, 1846 (type locality: Batavia). 



Arius laeviceps Bleeker, Nat. Geneesk. Arch. Nederl.-Indie, vol. 3, pt. 2, p. 165, 

 1846 (type locality: Batavia). 



