150 Beport on some Fishes received from Sitting River. [No. 2, 



Type. B. Btjchanani, nobis ; Pimelodus batasio, B. H. 



B. aeeinis, nobis, n. s. Exceedingly like B. Bucha^asi, as de- 

 scribed by Buchanan Hamilton and as figured in one of his unpub- 

 lished coloured drawings ; whereas his published figure (F. G. pi. 

 XXIII. f. 60,) refers to his Pimelodus carcio, which is a true Bageus 

 with moderately long maxillary cirri : — but having 12 instead of 16 

 anal rays, no distinct longitudinal black stripe on each side of the 

 body, but a tendency to shew three or four broad cross-bands, more 

 or less distinct, besides a round black spot near the gill-covers, as in 

 the other. The first dark band proceeds obliquely downward from 

 the fore-part of the first dorsal, to some distance below the lateral 

 line ; and posterior to this first band are obscure traces of three or 

 four others, the last at base of tail. On the membrane of the dorsal 

 fin is a large blackish spot, consisting of minute dark specks. Maxil- 

 lary cirri scarcely passing the eye ; the two inferior pairs of cirri 

 minute. Length 3f in. by f in. high, of dorsal spine J-g- in., and of 

 maxillary cirri under f in. Tenasserim. 



To the same type, but with shorter adipose dorsal, appertain the 

 tengana, CHANDAMABA, and eama of Buchanan Hamilton. B. 

 CHANDamaba is referred to Silundta by M. Valenciennes, and is 

 described by Hamilton to have only two cirri ; but his unpublished 

 figure represents six cirri distinctly, and in all this group the minute 

 cirri are discernible with difficulty and are extremely liable to be 

 overlooked. The Bageus capensis of Sir A. Smith's ' Illustrations 

 of S. African Zoology' would appear also to be referrible to this par- 

 ticular division. 



Of the well marked type exemplified by Bagbps sondaictjs and 

 B. doeoides of Valenciennes, Dr. Bleeker constitutes his genus 

 Hexanematicthts. The latter species, however, I consider to be — 

 H. sagub ; Pimelodus sagur, B. H. : Bagrus doroides, Val. For 

 a few days, in the month of March, 1859, several specimens were 

 brought to the Calcutta bazar ; and the largest obtained by me was 

 22| in. long, with dorsal spine 2f in., and pectoral spines 3f in. ; the 

 membrane prolonged into a short filament beyond the spines : the 

 latter are granulose, striated, with a regular series of tubercles in 

 front, which are round on the pectoral spines and omega-shaped on 

 the dorsal. Maxillary cirri reaching back to beyond the posterior 



