CLAEIAS. 247 



length of the 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. 



Clarias liocephalus. 

 Type (Tr. Z. S. 1898). 



1-2. Types. L. Tanganyika. Prof. J. E. S. Moore (C). 



3. Ad. Banzyville, Ubanghi. Capt. Eoyaux (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 A\ to 5 

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

 angular ; fontanelles small, the frontal sole-shaped and nearly -§• 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 

 priEmaxillary band ; nasal barbel § length of head ; maxillary barbel as 

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

 outer mandibular barbel about \\ length of inner, which measures 



