384 



Annals of the South African Museum. 



12. BARBUS DWAARSENSIS, n. sp. 



Depth of body equals length of head and is 3f times in total length 

 excluding caudal. Snout pointed, projecting beyond mouth, nearly 

 3 times in length of head ; eye 4 times in length of head, inter- 

 orbital width nearly 3 times ; mouth sub-inferior, its width 3^ times 

 in length of head ; lips moderately developed, lower with a mental 

 lobe about diameter of eye in depth. Two barbels on each side, 

 anterior f diameter of eye, posterior as long as eye. 



Dorsal iii 10 ; equally distant from middle of eye and from root of 

 caudal, border concave ; last simple ray moderately enlarged, bony, 

 not serrated, its rigid part f length of head. Anal iii 5 ; not reaching 

 caudal. Pectoral ~ length of head, not reaching ventral ; base of 

 latter below middle of dorsal. Caudal peduncle 1-J times as long as 

 deep. Scales longitudinally striated (some on the upper part of the 



body appear to be slightly radiate), 27 p, 2^ between lateral line and 



ventral, 12 round caudal peduncle. 



Colour (of preserved specimen), brown, darker above than below ; 

 about 3 faint longitudinal lines can be made out when the fish is dry ; 

 lower part of head and opercles light colour. 



One specimen, 106 mm. in length, from Dwaars Kiver, Trans- 

 vaal. 



The species is near B. br/icii, which, however, has 9 branched rays 

 in the dorsal fin. 



13. BARBUS MENTALIS, n. sp. 



Depth of body nearly 4 times in total length excluding caudal, 

 length of head 3f times. Snout rounded, about length of head; 





FIG. 44. Barlnts mentalix. 



