432 Annals of the South African Museum. 



4. BAEILIUS. 



Bar ilius, Ham. Buchan. Fish. Ganges, p. 384 (1822), part. ; Giinth., 

 Cat. Fish., vii., p. 286 (1868) ; Bouleng., Poiss. Bass. Congo, p. 231 

 (1901), Fish. Nile, p. 261 (1907), and Cat. Fresh. Fish. Afr., ii., p. 191 

 (1911). 



Opsaridium, Peters, Mon. Berl. Ac., 1853, p. 783, and Eeise n. 

 Mossamb., iv., p. 58 (1868). 



Pelotro2)hus, Giinth., Proc. Zool. Soc., 1864, p. 314, and Cat. Fish., 

 t.c., p. 320. 



Mouth large, oblique, without lips, with or without barbels. Sub- 

 orbitals large. Dorsal originating behind vertical of ventrals and 

 before that of anal. A scaly process at base of ventrals. Lateral 

 line low down, following ventral line of the body and running along 

 the lower part of caudal peduncle. Belly rounded, with small or 

 moderately large scales. 



Key to Species. 

 At least J of base of dorsal fin above anal. 



D. ii 7-8, A. iii 11, Sc. 41-42?-*, 2| ; depth of body 3f 



to 4 times in total length 1. B. pennaueyi, n. sp. 



D. ii 9, A. iii 13, Sc. 42 7 *, 3 ; depth of body 4 times 



in total length 2. P>. nearii, Blgr. 



D. ii 9, A. iii 13, Sc. 40-41 7 *. 2 ; depth of body 41 to 



4 times in total length 3. B. stepliensoni, n. sp. 



D. ii-iii 9-10, A. iii 10-11, Sc. 41-43 l\, 2 ; depth of 



Oft 



body 4-4^ times in total length 4. B. zambesensis, Peters. 



1. BARILIUS PEEINGUEYI, n. sp. 



Depth of body 3^ to 4^ times in total length excluding caudal, 

 length of head 3^ to 3^ times. Width of head about ^ its length ; 

 snout 3^ to 3f times in length of head, diameter of eye 3J to 3 T 9 

 times, interorbital width 3 to 3f 1 ^ times; mouth extending to vertical 

 of anterior third or middle of eye ; no barbels ; sub-orbital bones 

 nearly covering cheeks. Gill-rakers few, rudimentary. In some 

 specimens the lower jaw is covered underneath with more or less 

 distinct scars or rows of conical tubercles and, in the largest 

 specimen, there are about 8 pearl-like tubercles on each side of 

 upper jaw. 



Dorsal ii 7-8 ; originating midway between middle of eye and root 

 of caudal, posterior third above anal ; anterior rays longest, -?- to t 



