286 Proceedings of the Asiatic Society. [No. 3. 



golden shine ; the head browner : fins purple ; no dark spot on the adipose 

 dorsal ; and the lower-parts subdued white, studded over with minute 

 dusky specks (which also occur in A. arioides, but to a less extent). 

 This species is rarely procurable of small size, and it commonly occurs 

 2§ ft. or more. In a specimen b\ in. long, the dorsal spine measures 1|| 

 in.; in one of 10 in., If in. ; of 15 in., 2^ in. ; of 2 ft., 4 in-; of 2| ft., 

 4 f in. ; and of 2f ft., 5 in. : the membrane of the dorsal is scarcely pro- 

 longed beyond its spine, to a much less extent than in the two other 

 species. Occasionally, though rarely, one or more of the cirri are 

 divided in this fish, as usual in several of the Nilotic Silurid^. It is 

 not uncommon. 



A. arioides ; Bagrus arioides, Val. ; Pimelodus auratus, B. H. (MS, 

 on coloured drawing, nee B. auratus, Val.). Tolerably common, or 

 rather now and then brought in quantity : attaining to about 12 or 13 in. 

 long. Upper cirri reaching back to base of dorsal spine. The dorsal 

 and pectoral spines proportionally larger than in A. gagorides, also more 

 strongly pectinated behind, and more extensively granulated on the sides ; 

 the membrane of first dorsal prolonged beyond the spine, as usual as in 

 the present group. All the fins are suffused with black, more or less. A 

 distinct aureous wash on the upper parts, which begins to make its appear- 

 ance when the fish is about 6 in. long ; prior to which the general hue is 

 plain plumbeous or livid, with the fins conspicuously almost wholly purple- 

 black. Eyes proportionally large. Mouth (as in A. gagorides) broader 

 than in A. gagora ; its cleft reaching half-way to below the eye, as seen 

 in profile. A specimen 12 in. long has the dorsal spine 2| in., and one 

 exceeding 13 in. has it 2f in. 



Rita Buchanani, Bleeker : Pimelodus rita, B. H. ; Arius vita et A. 

 ritoides, Val. Common, chiefly in the hot season. 



Osteogeneiosus Cantoei, Bleeker : Arius militaris of Gangetic rivers, 

 auctorum. Somewhat rarely brought. 



Pangasius Buchanani, Val. : Pimelodus pangasius, B. H. Very 

 common. 



Silundia gangetica, Val. : Pimelodus silundia, B. H. Very common. 



Bagarius Buchanani, Bleeker : Pimelodus bagarius, B. H. Not rare. 

 Attains an enormous size, but large specimens are seldom brought to 

 the bazar. 



Pimelodus gagata, B. H. Not rare during the rains. 



Clarias magar ; Macropteronotus magur, B. H. Very common. 



Saccobranchus eossilis; Silurus fossiliSi Bloch : S. singio, B. II. 

 Extremely common. 



Plotosius canius, B. H. Very common. 



