icirrnvoLOGY. 267 



Mouth witliout cnlargod lips, lowor labial fold iiitcrni])t('(l. Up])er jaw somo- 

 ■what the longer. Crown of head flat. Harbels lung, as iu goni(i.ioma. Osseous 

 dorsal ray strong and smooth. Uniform silvery. 



Akyab. Maulmaiu. 



13. SxEVExsoxri, Day. 



E. iii. ; ]). 12; r. 17; V. 0; A. 8; C. 19. 



Bodv elongated and compressed. Upper jaw the longer. Lower labial fold 

 interrnpted. The maxillary barbels extend to lielow the posterior extremity of the 

 orbit ; the rostrals are sliortcr. Osseous dorsal ray weak and smooth. Silvery, 

 above darkei', numerous black specks along the side, a black sjjot at the base of the 

 tail, and a dark band along the dorsal flu. 



Iliils near Akyab. 



B. Bi.YTiiri, Day. 



B. iii.; D. 12; P. 1.5; Y. 9; A. 8 ; C. 17. 



Breorbital covered with pores. Barbels well developed. Caudal deeply forked. 

 2.V rows of scales betwei^n the lateral line and the base of the ventral tin. Uniform 

 sQvery (in s])irit). Perhaps this species is the young of B. comprcmus. 



Tcnasserim. 



B. 'J'ico harbeh pr/'seiif. 

 a. JJ'ifh an osseous dorsal serrafed ruy. 

 B. MACEOLEPIDOTrs, Cuv. ct Val. 



B. iii. ; D. 12 ; P. 17 ; V. 9 ; A. 7 ; C. 19. 



Snout pointed, upper jaw slightly the longer. Head compressed, ilat above. 

 The maxillary barbels as long as the orbit. Silvery, paler below. Fins orange, 

 anterior edge of the dorsal and outer margins of the caudal black. A badly developed 

 dark band from the dorsal to the ventral fin. 



Tavoy. 



b. Osseous dorsal ray eidire. 

 B. CHOLA, Ham. Buch. 

 Nga-khong and Nga-lowah. 

 B. iii. ; D. 11; P. 15; V. 9; A. 7; C. 19. 



Jaws equal in fi'ont. Barbels short. Silveiy, opereles shot with jjurjile and 

 gold. A dark blotch usually exists on the free poition of the tail. A dark mark on 

 the base of the first dorsal rays, and a row of dark spots along its centre. Grows 

 to 5 inches. The flesh is.bitter. 



Akyab to Mergui. 



B. BuKMANicus, Day. 



B. iii.; D. 12; P. 15; V. 9 ; A. 7 ; C. 17. 



Snout pointed, a considerable rise from the snout to the doi-sal fln. Maxillary 

 barbels very short. Labial fold interrupted. Silvery, paler below. A dull 

 blotch before the base of the caudal fin. Fins silvery, with a duU baud down the 

 centre of the dorsal. 



Burma. 



C. No barbels. 

 a. Zast undivided ray osseous and serrated. 

 B. APOGojj, Cuv. et Val. 

 Nga-ta-si and Nga-le-toung. 

 B. iii.; D. 12; P. 17; V. 10; A. 8; C. 19. 



