644 Uv. G. A. Boulenger on 



and root of ventral, 12 lound caudal peduncle. Silvery, 

 brownish on the back, posterior border of scales blackish ; a 

 black streak along the side of head, passing through the eye ; 

 fins greyish. 



Total length <J0 mm. 



A sitigle siiecinien. Native name: Basonga. 



Allied to B. cotigiciis, Blgr. Distinguished by the shorter 

 barbels and the more numerous scales in the lateral line. 



10. CI arias Mellandi, sp. n. 



Depth of body 5^ times in total length, length of head ?i\ 

 times. Head once and | as long as. broad, feebly granulate 

 above ; occipital process angular; frontal fbntanelle \ length 

 of head; occipital fontanelle very small ; diameter of eye 3| 

 times in length of snout, 5^ times in interorbital width. 

 Vomerine teeth granular, forming a large semielliptic patch, 

 squarely truncate behind, its longitudinal diameter 3 times 

 that of the band of prajmaxillary teeth. Nasal barbel ? 

 length of head, maxillaiy barbel | length of head. Gill- 

 rakers long, about 3.5 on first arch. Dorsal 65, its distance 

 from the occi|)ital process ^- length of head, its distance from 

 the caudal fin \ length of head. Anal 55, very narrowly 

 separated from the caudal. Pectoral spine serrated on the 

 outer border, |^ the length of the fin. Ventrals slightly 

 nearer end ot snout than caudal. Olive-brown above, 

 marbled with darker, whitish beneath ; a dark streak on each 

 side of the throat. 



Total length 345 mm. 



A single specimen. Native name: Mata or Mulenga. 



Said to reach a weight of over 6 lbs. 



A very distinct species, unique in the form o£ the patch of 

 vomerine teeth. 



11. Clarias Fouloni, sp. n. 



Depth of body 6^ times in total length, length of head 5 

 times. Head once and ^ as long as broad, smooth above ; 

 occipital process angular; frontal fontanelle | length of 

 head, twice as long as the occipital fontanelle ; diameter of 

 eye 3 times in length of snout, 5 times in interorbital width. 

 Vomerine teeth conical, forming a crescentic band, which, in. 

 the middle, is a little broader than the band of pramaxillary 

 teeth. Nasal barbel | length of head, maxillary barbel | 

 length of head. Gill-rakers about 20 on first arch. Dorsal 

 83, its distance from the occipital process ^ length of head ; 

 anal 68 ; both dorsal and anal embracing the root of the 



