CLARIAS. 



247 



length of tlie fin. Ventrals much nearer end of snout than caudal. 

 Caudal ^ length of head. Uniform blackish brown. 



Total length 140 millim. 



Lake Tanganyika ; Upper Ubanghi. 



Fig. 204. 



1-2. Types. 

 3. Ad. 



Clarias liocephalus. 

 Type (Tr. Z. S. 1898). 



L. Tanganyika. 

 Banzyville, Ubanghi. 



Prof. J. E. S. Moore (C. 

 Capt. Royaux (C). 



17. CLARIAS BREVICEPS. 



Bouleng. Ann. Mus. Congo, Zool. i. p. 135, pi. xlviii. fig. 6 (1900), Poiss. Bass. 



Congo, p. 258, pi. xiii. fig. 1 (1901), and Proc. Zool. Soc. 1907, p. 1080. 



Depth of body 6 to 8 times in total length, length of head 4^ to 5 

 times. Head 1^ times as long as broad, smooth ; occipital process 

 angular ; fontanelles small, the frontal sole-shaped and nearly j length of 

 head, the occipital oval and partly on the occipital process ; eye very small, 

 its diameter 3 times in length of snout, 6 times in interorbital width ; 

 width of mouth equal to interorbital width, ^ length of head; vomerine 

 teeth conical, forming a crescentic band which is as broad as the 

 prijemaxillary band ; nasal barbel f length of head ; maxillary barbel as 

 long as or a little longer than head, extending to extremity of pectoral ; 

 outer mandibular barbel about L| length of inner, which measures 



