258 



SILUKID^. 



sides, about J the length of the fin. Ventrals much nearer end of snout 

 than caudal. Caudal about f length of head. Uniform dark brown. 



Total length 155 millim. 



Angola, Old Calabar. — Types in Vienna Museum. 



1-5. Ad. Angola. Dr. Welwitsch (P.). 



6. Ad. Fort Don Carlos I., Angola. Dr. W. J. Ansorge (C). 



7. Ad. Okwoga, Cross R. R.D.Gard'ner,Esq.(P.). 



26. CLARIAS LIBERIENSIS. 



Steind. Notes Leyd. Mus. xvi. 1894, p. 54; Bouleng. Proc. Zool. Soc. 1907, 



p. 1086. 

 Clarias hulumce, Steind. t. c. p. 55. 



Depth of body 5 to 6J times in total length, length of head 3 J to 

 4| times. Head 1^ to 1^ times as long as broad, smooth or very finely 

 granulate above ; occipital process angular ; frontal fontanelle small, 

 sole-shaped ; occipital fontanelle smaller, just in advance of occipital 

 process ; eye very small, its diameter 3 times in length of snout, 7 or 8 



Tiz. 214. 



Clarias Ubei'iensis. 

 Sierra Leone. 



times in interorbital width, which equals 

 width of mouth and is contained twice 

 in length of head ; band of praemaxillary 

 teeth 4 times as long as broad ; vomerine teeth conical or subgranular, 

 forming a crescentic band which is as broad as the praemaxillary band ; 

 nasal barbel f to f length of head ; maxillary barbel a little longer (up 

 to 1|} than head, reaching nearly to end of pectoral fin or a little beyond ; 

 inner mandibular barbel as long as nasal, little shorter than outer. 

 About 20 gill-rakers on the first arch. Clavicles concealed under the 

 skin. Dorsal 60-68, its distance from occipital process f length of 

 head, almost in contact with caudal. Anal 44-45, almost in contact 

 with caudal. Pectoral nearly ^ length of head, the spine feebly serrated 



