BAKBUS. 171 



times. Snout rounded, 3^ to 4^ times in length of head, eye 3 to 3^ 

 times, interorbital width 2^ to 2J times; mouth terminal or subinferiov, 

 small ; lips feebly developed ; two barbels on each side, anterior ^ to f 

 diameter of eye, posterior J to 1^. Dorsal III 8 (rarely 7), equally 

 distant from anterior border or centre of eye and from caudal, border 

 more or less distinctly concave ; last simple ray not enlarged, not serrated, 

 nearly as long as or a little longer than head. Anal III 5, not reaching 

 caudal. Pectoral a little shorter than head, not reaching (rarely nearly 

 reaching) ventral ; base of latter below anterior rays of dorsal. Caudal 



Tier. US. 



Jhirhits 2^eruice. 

 liosetta Nile (F. K.). 



peduncle 1 to 1| times as long as deep. Scales radiately -striated, 

 28-32 jfVf, 2-3 between lateral line and ventral, 12-14 round caudal 

 peduncle. Silvery, back greenish, fins white or tinged with yellow; 

 often three more or less distinct round blackish spots on each side of 

 the body, tlie first before, the second behind vertical of base of dorsal, 

 the third at root of caudal. 



Total length 105 millim. 



Lower Nile to Blue Nile and Bahr-el-Gebel. — Types in Senckenberg 

 Museum, Frankfort/M. 



1, 2-4. Hgr. & yg. L. Menzaloh at Ghet-el-Nassara. L. Loat, Esq. (C). 



5-9. Ad. Lower Nile. J. Petherick, Esq. (C). 



10. Skel. „ ,, 



11. Ad. Rosetta Nile, near Barrage. L. Loat, Esq. (C). 

 12-1(3. Ad. Damietta Nile, „ 



17-20. Types. Nile at Cairo. Dr. Riippell (C). 



21-22. Ad. „ L. Loat, Esq. (C.;. 



23. Ad. Nile near Cairo. „ 



24-26. Ad. & horr. Canal near Cairo. 



