SILURID-E. 321 



numerous round black spots, the largest, on the side of the body, hardly 

 as large as eye ; all the fins also spotted with black. 



Total length 160 millim. 



Upper Zambesi, Northern Rhodesia. — Type in Paris Museum. 



36 a. SYNODONTIS TESSMANNI. 

 Pappeuh. Mitth. Zool. Mus. Berl. v. 1911, p. 523, fig. 



Depth of body 4^ times in total length, length of head 3£ times. 

 Head lj times as long as broad, finely granulate above ; snout obtusely 

 pointed, 1^ times as long as postocular part of head; eye supero-lateral, 

 5 1 times in length of head, a little more than twice in interorbital 

 width ; lips moderately developed ; prsemaxillary teeth in 3 transverse 

 series ; movable mandibular teeth £ diameter of eye, 22 in number. 

 Maxillary barbel with a distinct marginal membrane at the base, slightly 

 longer than head ; mandibular barbels with tubercular ramifications, 

 outer twice as long as inner. Gill-opening not extending downwards 

 beyond root of pectoral spine. Occipito-nuchal shield finely granulate, 

 with rounded posterior processes. Humeral process granulate and 

 striate, much longer than broad, acutely pointed. Dorsal I 7 ; spine 

 striated, not serrated in front, as long as head. Adipose dorsal 4^ 

 times as long as deep, 1| times as long as its distance from rayed dorsal. 

 Anal III 8. Pectoral spine shorter than that of dorsal, outer border 

 moderately serrated, inner strongly. Ventral reaching origin of anal. 

 Caudal deeply notched. Caudal peduncle nearly as long as deep. 

 Dark brown above and beneath ; fins dark grey, whitish at the base, 

 without spots. 



Total length 145 millim. 



South Cameroon. — Types in Berlin Museum. 



Very closely allied to S. soloni. Eye smaller, caudal peduncle a little 

 longer, and no spots on the fins. 



43. SYNODONTIS ALBERTI, Schilth. 

 Steind. Denksehr. Ak. Wien, lxxxix. 1913, p. 10. 



44. SYNODONTIS BATESII, Blgr. 

 Add: — 

 15-17. Ad. & yg. Akonolinga, Nyong R. G. L. Bates, Esq. (C). 



VOL. IV. T 



