2GU 



SILURID-E. 



barbel f to f length of head, maxillary If to 1| times, outer mandibular 

 1^ to If times, inner mandibular f to f . Gill-rakers few, about 15 on 

 anterior arch. Clavicles concealed under the skin. Dorsal 92-95, its 

 distance from occipital process § to -|- length of head. Anal 78-80. 

 Dorsal and anal extending to root of caudal. Pectoral \ length of 

 head, its spine feebly serrated on both sides and § to £ the length of the 

 fin. Ventrals about once and f as distant from caudal as from end of 

 snout. Caudal \ length of head. Dark olive- brown above, yellowish 

 beneath. 



Total length 255 millim. 



South Cameroon. 



1-3. Types. Ja TL 



4-6, 7-9. Ad., bgr., & yg. 

 10-11. Ad. & hgr. 

 12. Hgr. Nyong R. 



G. L. Bates, Esq. (C). 



28. CLARIAS L.EVICEPS. 



Gill, Proc. Ac. Philad. 18G2, p. 139 ; Sauv. Bull. Soc. Zool. France, 1882, p. 318, 

 pi. v. fig. 2 ; Bouleng. Proc. Zool. Soc. 1904, i. p. 200, and 1907, p. 1087, fig. 

 Clarias Mngsleyce, Giinth. Proc. Zool. Soc. 1902, ii. p. 334. 



Depth of body 8| to 12 times in total length, length of head 5 to 5J 

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

 process pointed ; frontal fontanelle sole-shaped, about twice as long as 

 broad ; occipital fontanelle smaller, in advance of occipital process ; eye 



Fig. 216. 



Clarias Iceviceps. 

 Cameroon (P. Z. S. 1907). |, 



very small, 3 to 4 times in length of snout, 6 to 7 times in interorbital 

 width, which equals ^ length of head and a little exceeds width of 

 mouth ; band of preemaxiilary teeth 4 to 5 times as long as broad ; 

 vomerine teeth conical, forming a curved band which is as broad as or a 

 little narrower than the prgemaxillary band ; barbels moderately thick, 

 nasal ^ to f length of head, maxillary If to If times, outer mandibular 



