72 



MOKMYKID.E. 



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

 Y~ in transverse series on body, j^ 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 millini. 



Upper Congo. 



Pis. 54. 



1. Type. 



2Iarct(senii(.'i ireelnii. 

 Tyin.(A.M.C'.). i 



JMonscinhc. 



liev. J. 11. Weeks (P.). 



n. MAUCUSENIUS BATEAU. 

 Bouleiig. Ann. & Mag. N. H. (7) xviii. IDOC, p. lUi. 



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

 Head once and ^ 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, 

 f or I length of snout, ^ interocular width. Dorsal lG-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 j length of head, once and i length of ventral, not 

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

 2-^ or 2 1 times as long as deep, a little shorter than head. G8-70 scales 



