254 



SILURIDjE. 



than interorbital width; band of prsemaxillary teeth about 4 times 

 as long as broad; vomerine teeth conical, forming a crescentic band 

 which is longer and a little broader than the band of prsemaxillary 

 teeth ; nasal barbel as long as or a little longer than head ; maxillary 

 barbel H to If times length of head, reaching ventral or between 

 pectoral and ventral ; outer mandibular barbel 1^ to 1 J times as long 

 as inner and about 1^ length of head. Gill-rakers moderate, 14 or 15 

 on anterior arch. Clavicles hidden under the skin. Dorsal 65-78, 



Fig. 210. 



Clarias alluaudi. 

 Type (F.N. ). 4. 



its distance from occipital process about J length of head, extending 

 to root of caudal. Anal 55-62, extending to root of caudal. Pectoral 

 ^ length of head, the spine serrated on both sides and about § the 

 length of the fin. Ventral 1^ times as distant from root of caudal 

 as from end of snout. Caudal about \ as long as head. Blackish 

 brown above, lighter bi-own beneath. 



Total length 230 millim. 



Lake Victoria. 

 1. Type. 



2. Type. 

 3-4. Types. 



Kavirondo Bay. 



Entebbe. 

 Bunjako. 



M. Alluaud (G.) ; 



Paris Museum (E.). 

 Mr. E. Degen(C). 



23. CLARIAS WERNERI. 

 Bouleng. Ann. & Mag. N. H. (7) xvii. 190(5, p. 5U9 ; Werner, Sitzb. Ak. Wien, 

 cxv. i. 1906, p. 1135, pi. iv. ; Bouleng. Fish. Nile, p. 297, pi. liii. fig. 3 

 (1907), and Proc. Zool. Soc. 1907, p. 10S4. 



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

 times. Head about 1£ times as long as broad, smooth or very feebly 



