80 Mr. G. A. Bouleno-er on Xir. — Descriptions of Four new African Freshwater Fishes. By G. A. Boulenger, F.R.S. Gnathonemus Abadii. Depth of body 3§ times in total length, length of head 5^ times. Head very slightly longer than deep, with feebly curved upper profile ; snout f-the length of the head ; mouth small, on a line with lower border of eye ; cliin with a globular dermal appendage ; teeth minute, conical, 3 in the upper jaw, 5 in the lower; eye rather large, f the length of tlie snout, which equals the interocular width. Dorsal 35, originating very slightly in advance of anal, its length 1| in its distance from the head. Anal 34, slightly nearer the root of the caudal than the base of the ventral, as long as the head. If as long as the ventral, reaching far beyond the base of the latter. Caudal scaled in its basal half, with pointed lobes. Caudal peduncle 3|-times as long as deep, as long as tiie head. 98 scales in the lateral line, 2I i" ^ transverse series on the body, |J in a transverse series between dorsal and anal, 16 round caudal peduncle. Brownish above, silvery wliite beneath. Total length 240 millim. A single specimen from Djebba, Upper Niger, presented to the British Museum by Capt. G. F. Abadie. A very distinct species, more nearly allied to G. Ussheri^ Gthr., and G. Greshoffi., tSchilth. Barilius Loati. Dei)th of body equal to length of head, 4 times in total length. Head twice as long as broad ; snout obtusely pointed, projecting strongly beyond the lower jaw, 1^ to twice as long as the eye, the diameter of which is contained 5 to 6 times in tlie length of tlie head, 1^ to twice in the interocular width ; mouth extending to below the posterior third of the eye ; no barbels ; the naked space between the prffiopercle and the suborbitals about ^ the width of the latter. Gill-rakers very short, rudimentary. Dorsal III 7-8, originating at equal distance from the occiput and the root of the caudal, or a little nearer the latter, the second iialf of its base above the anal ; its anterior rays longest, f to f the length of the head. Anal 111 13-15, notched, the ante-rior rays much longer than the others, about as long as the
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