422 



SILUEID.E. 



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

 lips moderately 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- 

 nuchal shield simply convex, rugose and pitted, lj to 1^ times as long 

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

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



Fig. 317. 



Synodontis victorkn. 

 Type (F. N.). i. 



extending so far back as occipito-nuchal process. Dorsal I 6-7 ; spine 

 straight, f length of head, smooth in front, feebly serrated behind. 

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

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

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

 inner. Caudal deeply forked, upper lobe the longer. Caudal 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 250 millim. 



Lake Victoria. 





1. Type. 



Entebbe. 



2. Type. 



Buganga, 



Mr. E. Degen (C). 



