MtCROSYNODONTIS. 



477 



times in length of head, 1^ to 2 times in interorbital width; lips rather 

 strongly developed ; prsemaxillary teeth forming a short and broad band ; 

 mandibular teeth not more than J diameter of eye, 20 to 30 in number. 

 Maxillary barbel simple, as long as or a little longer than head ; mandi- 

 bular barbels with long slender branches, outer longer than inner and a 

 little shorter than head. A fold across the throat, but gill-openings 

 restricted to the sides. Occipito-nuchal shield rugose like the occiput, 

 a little longer than broad, with obtuse or rounded posterior processes. 



Yis. 356. 



Microsynodontis batesii. 

 Type (P. Z. S. 1903). 



Humeral process long and narrow, acutely pointed. Dorsal I 6 ; spine 

 strong, straight, § to f length of head, striated, smooth or with a few 

 very feeble posterior serrae in its upper part. Adipose dorsal low, 

 elongate, 2 to 3 times as long as its distance from rayed dorsal. Anal 

 III-IV 8-9, rounded. Pectoral spine strong, shorter than head, striated, 

 feebly serrated on outer border, strongly on inner. Ventral not reaching 

 anal. Caudal rounded. Caudal peduncle about as long as deep. 

 Dark brown or blackish above, with 5 yellow cross-bars, the first on the 

 occiput, the second at the base of the dorsal ; the body lower down with 

 round yellow spots ; throat and belly greyish or pale brownish, spotted 

 or marbled with dark brown ; fins spotted with dark brown, caudal 

 with a yellow bar at the base. 



Total length 100 millim. 



South Cameroon, Gaboon. 



1-7. Types. Mvile R., S. Cameroon. 



8. Skel. 



9. Hgr. 

 10-11, 12-19. Ad., 



hgr., & yg. 

 20. Hgr. 

 21-26. Ad., hgr., 



& yg- 



27-28. Hgr. 



G. L. Bates, Esq. (C.) . 



Near Efulen, S. Cameroon. 

 Ja R., „ 



Bumba R. at Assobam, S. Cameroon. 

 Nyong R., „ 



Gaboon. 



