MxVSTACEMBELUS. 



137 



28. MASTACEMBELUS STArPERSIT. 

 Boiileng. Rev. Zool. Afv. iii. 1914, p. 446. 



Depth of body 11 to 12 times in total length, length of head to 7 

 times, ^'ent nearly equally distant fiom head and from caudal, its 

 distance from head 2J to 2| times length of latter. Snout 2 to 2h times 

 as long as eye, ending in an appendage uliicli is about as long as eye; 

 mouth extending to below anterior border of eye ; no prseorbital or 

 praeopercular spines. Dorsal XXXII-XXXIII 80-83 ; distance be- 

 tween fir^t spine and head about f lengtli of latter. Anal III 85-88. 

 Caudal rounded. Pectoral nearly ^ length of head. Scales very small, 

 22 or 23 between origin of soft dorsal and lateral line, which is very 

 indistinct. IJack pale brown or yellowi:^ll. with or without a series of 

 large dark brown spots, the pale colour separated from the dark brown 

 of the sides bv a blacki^-h-brown lateral band, extending to the tip of 



Mastacembehis sta2ipersii. 

 Type. S. 



tlie snout and passing through tlie eye ; dorsal brown and anal whitish 

 with a dark brown longitudinal streak, or both tins whitish with a basal 

 series of large dark brown spots. 



Total length 1-jO millim. 



Lake Mweru and rivers of Katanga (Lubumbashi E. and Luapula II.). 

 — Types in Congo Museum, Tervueren. 

 1-2. Young, types. Liibumbaslii E., near Elisabetlivillc. Dr. L. Stappers (C). 



2'.i. MASTACEMBELUS TRTSPINOSUS. 

 Steind. An/. Ak. Wicii. t'.Ul, p. 52'.\ an.l Sit/.h. Ak. Wien, cxx. 1. I'.Hl. p. 118:5 

 Deptli of body about 12 times in total length, length of head 7 times. 

 Vent nearer base of caudal tlian end of snout. Snout 3 times as long 

 as eye, ending in an appendage which measures If times diameter of 

 latter ; mouth not extending to below anterior border of eye ; 3 pnc- 

 opercidar s;iines. Dorsal XXXI 05. Anal III 70. Caudal rounded. 



