BAKBUS. 



211 



at the base; silvery white below; pectoral and ventral fins orange, dorsal, anal, and 

 caudal lemon-yellow at the base, greyish or blackish towards the border ; iris yellow. 



Measurements (in millimetres) and numbers of fin-rays and scales. 



Total length (without caudal) 



Greatest depth 



Length of head 



Width of head 



Length of snout 



Diameter of eye 



Interorbital width 



Width of mouth 



Length of anterior barbel 



„ posterior barbel 



„ last simple ray of dorsal (ossified part) 



„ longest ray of anal 



„ pectoral , 



Number of branched rays of dorsal 



„ scales in lateral line 



„ „ transverse series above lateral line 



„ „ ,, ,, below lateral line 



,, „ between lateral line and ventral . . 



„ „ round caudal peduncle 



I. 



540 

 130 

 130 



75 

 48 

 24 

 47 

 33 

 22 

 24 



9 



90 



33 

 H 



H 



3 

 14 



225 

 65 

 60 

 31 

 20 

 14 

 22 

 16 

 10 

 11 

 34 

 39 

 44 



8 

 35 



H 



H 



12 



13 

 35 

 33 

 37 



8 

 36 



H 

 H 



3 

 12 



200 



175 



55 



50 



53 



41 



28 



22 



19 



13 



13 



10 



18 



15 



14 



10 



5. 



10 

 33 

 30 

 35 

 9 

 36 



H 

 H 



13 



155 

 45 

 44 



22 

 14 

 11 

 15 

 12 



8 



9 

 28 

 25 

 29 



8 

 34 



H 

 H 



3 

 14 



145 

 41 

 41 

 21 

 15 

 11 

 13 

 10 

 7 

 9 

 25 



24: 



29 



8 



34 



H 

 H 



3 

 12 



1. Buganga. (Skin.) 



2-6. Bunjako. 



This species is described from a large skin, 600 millim. in length, from Buganga, 

 Lake Victoria, and eight smaller specimens from Bunjako, obtained by Mr. E. Degen 

 in November 1905. 



Specimens previously obtained by Dr. Fischer in Lake Victoria, and preserved in the 

 Berlin Museum, appear to have been referred by Hilgendorf to Eiippell's B. nedgia, 

 which differs in the wider interorbital space and the presence of a long dermal lobe 



2e2 



