72 



MOJiMYKlD.E. 



as long as deep, a little shorter than head. 45 scales in lateral line, 

 fj in transverse series on body, jg between dorsal and anal, 12 round 

 caudal peduncle. Brownish, with an ill-defined darker vertical band 

 between origin of dorsal and origin of anal ; anterior half of caudal 

 peduncle dark brown. 



Total length 140 millhn. 



Upper Congo. 



Fig. 54. 



1. Type. 



Marcwenius tueeksii. 



Type (A. M. C). \, 



Monsembe. 



Rev. J. H. Weeks (P.). 



11. MAUCUSENIUS BATESII. 

 Bouleng. Ann. & Mag. N. H. (7) xviii. 1906, p. 36. 



Depth of body equal to length of head, 4| to 5 times in total length. 

 Head once and ij as long as deep ; snout rounded, \ length of head ; 

 mouth small, subinferior, its width \ length of head ; a very distinct 

 mental swelling ; teeth small, notched, 5 or 6 in upper jaw, 6 in lower ; 

 nostrils midway between eye and end of snout, anterior on a level with 

 centre of former, posterior on a level with its lower border ; eye small, 

 J- or \ length of snout, \ interocular width. Dorsal 16-17, originating 

 above fifth ray of anal, its length about \ of its distance from head. 

 Anal 22-23, a little nearer root of caudal than base of ventral. Pectoral 

 pointed, about f length of head, once and -£ length of ventral, not 

 reaching base of latter. Caudal with pointed lobes. Caudal peduncle 

 2-| or 2-f times as long as deep, a little shorter than head. 68-70 scales 



