289 



> 



hind, not so high as the soft dorsal. Adipose fin equal to of 

 somewhat shorter than dprsal. Pectoral spine stronger and 

 usually slightly shorter than that of the dorsal, granulated 

 exteriorly and serrated interiorly. Ventral fins much shorter 

 than the pectorals, not extending on to the anal. Caudal 

 deeply forked. Teeth on palate villiform, in 4 groups, the 

 outer ones large, somewhat triangular and emarginate posteri- 

 orly, connected together anteriorly by the two small median 

 groups. Colours: brownish above, bluish on the sides where 

 it is glossed with gold, and dull white beneath. Fins with a 

 bluish-black tinge. Young specimens are of a brownish colour, 

 glossed above with purplish and yellow, the fins are nearly 

 black. Length over 900 mm. [After Giinther and Day; not 

 seen by us]. 



Habitat: Singapore (Duncker). 



Through the seas of India to Bombay, entering estuaries 

 and tidal waters.' 



n. Arius sagor (Ham. Buch.) 



Pimelodus sagor Hamilton Buchanan, Fish. Ganges 1822, p. 169. 

 Bagriis sondaicus Cuvier & Valenciennes, Hist. Nat. Poiss. XIV. 1839, p. 444. 

 Bagriis javensis Cuvier & Valenciennes, Hist. Nat. Poiss. XIV. 1839, P- 445- 

 Bagrus sagor Cuvier & Valenciennes, Hist. Nat. Poiss. XIV. 1839, p. 445. 

 Bagrus sondaicus Cantor, Journ. Asiat. Soc. Bengal XVIII. 1850, p. 1237. 

 Hexanematichthys sundaicus Bleeker, Ichth. Arch. Ind. Prodr. I. Siluri, 1858, 



p. 127. Atl. Ichth. II. 1862, p. 26. 

 Arius sagor Giinther, Cat. Brit. Mus. V. 1864, p. 141. 

 Arius sagor Kner, Novara-Exp. Fische, 1865 1867, p. 310. 

 Arius sagor Day, Fishes of India, 4. 1878 1 888, p. 461. 

 Galeichthys sondaiciis Fowler, Proc. Acad. Nat. Sc. Philadelphia (2) LVII, 1905, 



p. 462. 

 Arius sagor Scale, Philippine Journ. Science V. 1910, p. 266. 



B. 57; D. I. 7; A. 1819; P. I. II; V. 6. 



Elongate. Height 5 x / 4 6, head 3*/ 2 4, strongly depressed, 

 much broader than high, its width a little less than its length. 

 Bones of upper surface of head, and triangular humeral process 

 strongly granulated, granules partly arranged in radiating or 

 concentric lines; they extend even on the foremost part of the 

 lateral line. Occipital process forming a subcircular plate, broader 

 than long, with a median keel, touching the strongly granulated, 

 very broad butterfly-shaped basal bone of dorsal spine, the form 

 INDO-AUSTRALIAN FISHES II. 19 



