462 



Annals of the South African, Museum. 



5. SYNODONTIS MACROSTIGMA, Blgr. 



Bouleng., Cat. Fresh. Fish. Afr., ii., p. 432, fig. 325 (1911), and Trans. 

 Zool. Soc., xviii., v., 1911, p. 407. 



Depth of body 4 T \ times in total length excluding caudal, length 

 of head 3f times. Head ly\ f times as long as broad, rugose above ; 

 snout rounded and a little longer than postocular portion of head ; 

 eye supero-lateral, 4^- times in length of head and 1^ times in inter- 

 orbital width ; lips moderately developed ; prasmaxillary teeth forming 

 a short, broad band ; movable mandibular teeth T ? ^ diameter of eye, 



xr- r.*;s*v;;rT*;*v 



KtV/? '", ,/;**:< 

 ^Sfe ' - 



nixtiiiiiut. The type. . 



FIG. 109. 



18 in number. Maxillary barbel with a marginal membrane behind 

 and a series of indistinct round warts in front, length of head and 

 not quite reaching base of pectoral spine ; mandibular barbels with 

 short tubercular branches, outer 1| times as long as inner. Gill- 

 openings not extending downwards beyond root of pectoral spine. 

 Occipito-nuchal shield convex, rough like occiput, as long as broad, 

 posterior processes obtusely pointed. Humeral process 1^ times as 

 long as broad, triangular, granulate, without keel, extending as far 

 back as occipito-nuchal process. 



