422 



SILURID.E. 



of interorbital region, which is slightly convex ; occipital region convex ; 

 lips moderatel)^ developed ; praemaxillary teeth forming a short and 

 broad band; movable mandibular teeth ^ diameter of eye, 19 to 21 in 

 number. Maxillary barbel with a narrow marginal membrane at base, 

 nearly as long as head, extending to base of pectoral spine ; mandibular 

 barbels with slender simple branches, outer nearly twice as long as 

 inner. Gill-opening not extending below base of pectoral fin. Occipito- 

 nuclial shield simply convex, rugose and pitted, 1| to 1 J times as long 

 as broad, ending in two blunt points. Humeral process covered with 

 granular asperities, 1^ times as long as broad, acutely pointed, not 



Fig. 317. 



tSifuodontis victories. 

 Type (F. N.). k. 



extending so far back as occipito-nuchal process. Dorsal I G-7 ; spine 

 straiglit, f lenLjth of head, smooth in front, feebly serrated behind. 

 Adipose dorsal 4 to 5 times as long as deep, 1§ to 2 times as long as its 

 distance from rayed dorsal. Anal IV 8. Pectoral spine a little shorter 

 than licad, not reaching ventral, feebly serrated on outer side, strongly on 

 inner. Caudal deeply forked, upper lobe the longer. Caud^il peduncle 

 as long as deep or slightly longer. Brown above, white beneath, the 

 brown parts with rather large round darker spots, which may be very 

 indistinct. 



Total length 2-30 millim. 

 Lake Victoria. 

 ]. Typo. 



-• TyP^ 



Entebbe. 

 Buo-ano-ii. 



Mr. E. Deoen (C). 



