Frethicater Fiahts from Soulh Cameroon. 1^7 



acutely pointed lobea, as loni; as lieaJ, greater part covored 

 with scaler. Caudal peduncle 3 times as long as deep, 

 I length of head. i)3 scales in lateral line, .^ in transverse 

 series on body, 32 in transverse series between dorsal and 

 nnal, 16 round cauilal peduncle. Brown above, silvery 

 white beneath. 



Total length 225 mm. 



Intermediate between .1/, macrophthahnus, Gthr., and 

 At. ovis, Blgr. 



A single specimen from the Buniba River at Assobam. 



ChampsobORUS, gen. nov. Characinidarum. 



Snout elongate, pointed; mouth large; upper jaw movable 

 upwards ; maxillary very small, not hidden under the pra- 

 orhital when the mouth is closed ; both jaws with a single 

 series of bicuspid teeth, the laterals compressed, the anterior 

 more conical and canine-like. Greater part of cheek covered 

 by the suborbitals; nostrils near the eye, close togetiier, 

 separated by a valvular flap; gill-membranes narrowly 

 united to isthmus. Body elongate, compressed. Scales 

 small, strongly ciliated; lateral line straight, along the 

 middle of the side; a small scaly process at base of ventral. 

 Dorsal with 18 rays, above the ventrals; anal with l-i rays j 

 adipose dorsal fin small. 



Allied to Mesoborus, Pellegrin, but with a single series of 

 teeth in both jaws. 



Champsohorus peUegrini. 



Depth of body 4^ to 5 times in total length, length of head 

 3 times. Head 3 to 3^ times as long as broad, feebly rugose 

 above; snout about 1^ times as long as eye, as long as post- 

 ocular part of head ; mouth not extending quite to below 

 anterior border of eye ; 2b or 2G teeth on each side of upper 

 jaw, 22-24 in lower ; the two teeth at the symphysis of tiie 

 upper jaw the longest ; naked part of cheek about half width 

 of suborbital. Gill-rakers rudimentary. Dorsal III 16, 

 originating well in advance of ventrals, equally distant from 

 eye and fiorn root of caudal, longest ray about lialf length of 

 head. Anal III 11. Pectoral about § lengtii of head. 

 Caudal nearly entirely covered with small scales, deeply 

 forked, lobes rounded. Caulal peduncle about 1§ times as 

 long as deep. Scales 90-98 J^||, 10-11 between lateral line 

 and ventral. Yellowish, with rounded brown spots, the 

 largest of which form a series along the lateral line ; three 



