1S60.] Beport on some Fishes received from Sitang Biver. 151 



base of the pectorals, as far as the tip of the triangular granulose 

 bone above the pectorals and behind the gill-cover. Osseous plate 

 broad, and uniformly granulose almost to the ventrals ; the second 

 plate, anterior to the base of dorsal, large and bilobate or saddle- 

 shaped. A series of granulose ossicles continued along the lateral 

 line, nearly as far as the posterior base of the dorsal fin. Colour 

 uniform livid plumbeous above, spotless pearly-white below : a series 

 of transverse dull silvery bauds, each with a row of pores along its 

 anterior margin,* above the lateral line : no dark spot on adipose 

 dorsal ; the membrane of anterior dorsal pale, and of the other fins 

 purple-black. Eyes moderate, with yellow irides. 



Another type is rightly discriminated by Dr. Bleeker by the name 

 Cephalocassis, comprising species both from the Old World and 

 the New. Among them are — 



C. so^A ; Pimelodus sona, B. H. : P. auratus, B. H., MS. : 

 Bagrus arioides, Val. 



C. gagoeides ; Bagrus gagorides, C. V. ; Pimelodus gagora, B. H. 

 (in part), vide J. A. 8. XXVII, 285. 



C. tbachypohtts ; B. trachypomus, C. V. ; which I am now satis- 

 fied is distinct from gagoeides, though 1 have not obtained it. 

 Indeed, the habitat of this fish is not stated. » 



Abius is restricted by Dr. Bleeker to the type exemplified by P. 

 arius and P. gagora, B. H., with two groups of blunt teeth on the 

 palate. The following also belongs to it. 



A. jatitjs ; Pimelodus jatius, B. H. Stated to have no palatal 

 teeth ; and certainly they are not always discernible in the recent 

 fish.f But in most fresh specimens, and always soon after death, 

 or in the dry skin, two oblique oval masses of round tubercle-like 

 teeth are seen, very far back on the palate, and a few similar teeth 

 detached from the others by a long interval are placed in two small 

 lateral masses nearer to the card-like maxillary teeth. General aspect 

 of A. gagoka, but with the face anterior to the eyes considerably 

 longer : maxillary cirri reaching only to the white spot on centre of 



* These are difficult to discern in the dry skin. 



t In a description which I took from the first specimen obtained, I under- 

 lined the statement that it had no palatal teeth. 



x 2 



