CLARTAS. 



239 



serrated on the outer border and | the length of the fin. Ventrals 

 slightly nearer end of snout than caudal. Caudal ^ length of head. 

 Olive-brown above, marbled with darker, whitish beneath ; a dark 

 streak on each side of the throat. 

 Total length 345 millim. 



Lake Bangwelu. 



Pig. 198. 



Clarias mellandi. 

 Type (P. Z. S. 1907). 



1. Type. 



L. Bnngwelu. 



F. H. Mellaiid, Esq., and 

 Father Foiilon (C). 



The following young specimens (85 and 145 millim. long) are referred 

 with doubt to this species. In the smaller the vomerine band of 

 teeth is crescentic, and only a little broader than the prae maxillary, 

 whilst in the larger it forms almost a half-disk. 16-20 gill-rakers on 

 anterior arch. Dorsal 70, Anal 60. Distance between dorsal and 

 caudal 4 to ^ length of head, 



2-3. Yg. Dongwenna, Mossamedes. Dr. W. J. Ansorge (C). 



9. CLARIAS TSANENSIS. 



Bouleng Ann. k Mag. N. H. (7) x. 1902, p. 438, Fish. Nile, p. 292, pi. li. fig. 2 

 (1907), and Proc, Zool. Soc. 1907, p. 1075. 



Depth of body 6^ to 7^ times in total length, length of head 3^ to 

 3f times. Head 1^ to 1| times as long as broad, perfectly smooth 

 above; vertex very strongly flattened, almost concave in the adult; 



