MLCR08YX0D0NTIS. 477 



times in length of head, IJ to 2 times in iuterorbital width; li[)s 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. 



Fig. ;3o6. 



Microsynodontis hatesli. 

 Type (P. Z. S. 1903). 



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

 strong, straight, f to J 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 reachin<j- 

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

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

 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 ; tins spotted with dark brown, caudal 

 with a yellow bar at the base. 



Total length 100 millim. 



South Cameroon, Gaboon. 



1-7. Tyi)es. Mvile R., S. Cameroon. G. L. Bates, Esq. (C.). 



8. Skel. „ „ ^^ 



9. Hgr. Near Efulen, S. Cameroon. 

 10-11, 12-19. Ad., Ja R., 



hgr., & yg. 

 20. Hgr. Bumba R. at Assobam, S. Cameroon. „ 



21-2G. Ad.,l.gr., NyongR., 



27-28. Hut. Gaboon. 



