1902.] FISHES FROM THE NIGER BELTA. 327 



28. Barbus ntgeriensis, sp. n. (Plate XXVIII. fig. 3.) 



Depth of body equal to length of head, 4 times in total length. 

 Snout rounded, projecting very slightly beyond the mouth, as 

 long as the eye, 3| times in length of head ; interoi'bital width 

 2| in length of head ; lips indistinct ; two pairs of barbels, the 

 posterior as long as the eye, the aiiterior a little shorter. 

 Dorsal III 8, last simple ray slender, flexible, a little shorter 

 than the head ; the fin, the border of which is scarcely emar- 

 ginate, originates anteriorly to the base of the ventral and is 

 nearer the occiput than the root of the caudal. Anal III 5, 

 its longest ray | length of head. Pectoral a little shorter than 

 head, not reaching ventral. Caudal forked. Caudal peduncle 1| 

 as long as deep. Scales 25 g|, 2| between lateral line and ventral, 

 12 round caudal peduncle. Silvery, brownish on the back. 



Total leng-th 48 millim. 



A single specimen from Agberi. 



Allied to B. camptacanthas Blkr., but snout shorter, eye 

 larger, and dorsal more forward in position. 



29. Barilius niloticus Joannis. 



Was obtained in the Upper Niger by Dr. Christy. 



SiLURIDiE. 



30. Clarias lazera C. & Y. — Agberi, Abo. 



31. Gymnallabes typus Gthr. — Ossomari. 



32. Heterobranchus senegalensis C. & Y. — Agberi. 



33. EuTROPius NILOTICUS Riipp. — Ossomari. 



34. SCHILBE SENEGALENSIS C. & Y. — Abo. 



35. Parailia congica Blgr. — Abo. 



36. Chrysichthys buettikoferi Stdr. — Assay. 



37. Clarotes laticeps Riipp. — Oguta, Abo. 



38. Auchenoglanis occidentalis C. & Y. — Agberi, Assay, 

 Oguta, Abo. 



39. Synodontis gambiensis Gthr. — Assay. 



40. Synodontis robbianus J. A. Smith. — Oguta, Abo, Osso- 

 mari. 



41. Synodontis melanoptbrus, sp. n. (Plate XXIX. fig. 1.) 



Prsemaxillary teeth in several irregular series, forming a broad 

 band; mandibular teeth 35 to 40, measuring about -f the diameter 

 of the eye. Depth of body 3| times in total length, length of 

 head 3 3 or 34. Head a little longer than broad, convex on the 



