I860.] Report on some Fishes received from Sitang River. 149 



remarkable colouring ; the head aud fore-part of the body being 

 bright silky-white above, studded with minute pores (as best seen 

 under a magnifier). Maxillary cirri reaching to the end of adipose 

 dorsal. Teeth and palatal band of them as usual in the genus. 

 Eyes one-third of the vertical diameter of the head, and the two 

 separated by an interspace equal to the orbit. Occipital process 

 nearly as in B. gttlio, (B. H.) First dorsal spine short and trian- 

 gular ; the second elongated, moderately slender, and pectinated behind 

 for its terminal third ; the next two soft rays being longer than the 

 spine. Pectoral spines very strongly pectinated behind. Adipose 

 dorsal fin elongated longitudinally. Tail strongly forked. 

 Z>. 2-1.— A. 10.— P. 1-9.— V. 6.—0. 17. 



Fins chiefly black, the rajs of the first dorsal pale. Adipose dorsal 

 pale and yellowish, studded with minute dusky specks, and having a 

 slight dusky border. Base of ventrals yellowish, and an admixture of 

 this colour on the pectorals, anal, and caudal. Body chiefly of a dark 

 chocolate-brown, passing to silky-white anterior to the dorsal spine.* 

 Largest specimen 5f in. long, li in. high at the dorsal spine, and lenght 

 of dorsal spine 1 —^ in. From the Sitang and other Burmese rivers. 



B. tekgaba, (B. H.), var. Merely differs from B. tengaba of 

 Bengal by having constantly a strongly marked black spot near the 

 tail, similar to the pectoral spot in both races. Tenasserim. 



B. catasius, (B. H.), var. Differs only from the Bengal race by 

 having a very distinct black mark at base of the dorsal spine, and in 

 some individuals a distinct black spot also on the operculum, — mark- 

 ings which are only indicated in Gangetic specimens. Tenasserim. 



Batasio, nobis, n. g. A Bagroid form well worthy of distinction ; 

 comprising a number of small species with round and prominent 

 muzzle, and the contracted mouth opening from below : with eight, 

 or sometimes (?) six, cirri, which are very short, the maxillary cirri 

 scarcely passing the eye in some. Palatal band of teeth continuous 

 with the mass of maxillary teeth, or separated only by a slight 

 groove. Best as in Bageits (verus). 



* This white recals to mind that of the male of Hepialfs humuli, an insect 

 commonly known in England as the c Ghost-moth.' — In the recent fish, the colour 

 of the lower parts should be green, according to a communication just received 

 from Major Tickell. 



