BARILJUS. 195 



2, BARILIUS WEEKSII. 

 Bouleng. Ann. Mus. Congo, Zool. i.p. 103 (1899), & p. 134, pi. xlviii. fig. 4 (1900), 

 and Poiss. Bass. Congo, p. 232 (1901). 

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

 Head 2\ times as long as broad ; snout pointed, projecting slightly 

 beyond lower jaw, as long as eye or interorbital width, 3f times in 

 length of head ; mouth extending to below anterior third of eye ; no 

 barbels ; suborbital bones nearly entirely covering the cheek. Gill- 

 rakers short and few. Dorsal III 8, above space between ventrals and 

 anal, originating midway between occiput and root of caudal; anterior 

 rays longest, f length of head. Anal III 10, falciform, anterior rays 

 longest. Pectoral pointed, shorter than head, widely separated from 



Fig. 170. 



Barilius weeksii. 

 Type (A. M. 0). 



ventral. Caudal forked. Caudal peduncle twice as long as deep. 

 Scales with radiating striae, 39 g|, 2 between lateral line and ventral, 

 14 round caudal peduncle. Silvery, olive on the back. 



Total length 70 millim. 



Upper Congo. 

 1. Type. Monsemho. Rev. J. H. Weeks (P.). 



3. BARILIUS LONGIROSTRIS. 

 Bouleng. Ann. Mns. Congo, Zool. ii. p. 33, pi. is. fig. 4 (1902). 



Depth of body 6 times in total length, length of head 3^ times. 

 Head with straight upper profile, 3^ times as long as broad, twice as 

 long as deep ; snout acutely pointed, projecting slightly beyond lower 

 jaw, more than ^ length of head ; eye 5 times in length of head, equal 

 to interorbital width ; mouth extending to below posterior third of eye : 

 no barbels ; naked space between praeoperculum and second suborbital 

 nearly § width of latter. Gill-rakers rudimentary. Dorsal III 9, above 

 space betAveen ventrals and anal, originating midway between centre of 



o2 



