FEOM THE LAKE NGAMI BASIN, BECliUANALAND, 



407 



far back as occipito-nuchal process. Dorsal I 7 ; spine f length of head, slightly 

 curved, smooth in front, feebly serrated behind. Adipose dorsal o^ times as 

 long as deep, as long as its distance from rayed dorsal. Anal IV 8, rounded. 

 Pectoral spine as long as dorsal, rather feebly serrated on outer border, strongly on 

 inner. Ventral rounded, not reaching anal. Caudal deeply nocched. Caudal 



Text-fis. 



V.Sr'S* 



Synodontis luoosnami. -|. 

 (From Cat. Afr. F.W. Fishes.) 



peduncle a little longer than deep. Dark brown above, lighter beneath ; back, sides, 

 and fins closely dotted with black. 



Total length 150 mm. 



A single specimen. 



12. SyNODOjN'TIS maceostigma. 

 Bouleng. Cat. Afr. F.W. Fish. ii. p. 432, fig. 



Depth of body 3^ times in total length, length of head 3^ to 3f times. Head a 

 little longer than broad, rugose above ; snout rounded and as long as postocular part 

 of head ; eye supero-lateral, 6 to 6| times in length of head, twice or a little over 

 twice in interorbital width ; lips moderately developed ; prsemaxillary teeth forming a 

 short and broad band ; movable mandibular teeth not quite | diameter of eye, 20 to 

 26 in number. Maxillary barbel with a broad marginal membrane behind and a 

 series of round warts in front, | length of head, just reaching base of pectoral spine ; 



VOL. XVIII. — PART v. No. 2. — Mcfi/, 1911. 3 K 



