252 



CYPBINID^E. 



Measurements (in millimetres). 



Total length (without caudal) ...... 



Greatest depth , 



Length of head 



Width of head 



Length of snout 



Diameter of eye 



Interorbital width 



Length of anterior barbel , 



„ posterior barbel , 



,, last simple ray of dorsal 

 ,, longest ray of anal 



48 

 15 

 11 



6§ 



3 



4 



4 



2 



4 

 13 



47 



13 



12 



6 



3 



4 



4 



2 



4 



12 



7 



25 



8 



H 



3i 



H 



2J 



9 1 



1| 



8 

 41 



I have examined numerous specimens, which I had at first regarded as young of 

 B. perince. About sixty were obtained by Mr. Loat at a regulator near Luxor between 

 Oct. 8th and Nov. 12th, 1900, two between Luxor and Assuan, Sept. 1900, and four 

 in the Damietta branch of the Nile, close to the Barrage, downstream side, on Aug. 2nd, 

 1899. One specimen was caught at Ghet-el-Nassara, on April 28th, 1899, in a trench 

 leading directly into Lake Menzaleh. The same species has also been found in the 

 Blue Nile by Capt. S. Flower, at Wad Medine and Rosaires, in June 1905. 



B. neglectus is very nearly related to B. radiatus, Peters, from the Revugo River at 

 Tette, Mozambique, which, to judge from the description and figure, differs in the 

 larger head and the pectoral reaching the base of the ventral. It differs from 

 B. humilis, Blgr., in the shorter caudal peduncle, the longer posterior barbel, and 

 one or two scales less in the transverse series. The latter character also distinguishes 

 it from B. perince. 



