MASTACKMBELUS, 



133 



and lateral line. Yellowish, with \2 elliptic, brown, dark-odgcd bands 

 across ti;e back and another across the occiput ; a series of roundish 

 brown spots below the lateral line, alternating with tlie dorsal bands; 

 dorsal and anal fins spotted with black and edged witli white; pectoral 

 with two dark transveise streaks. 



Total length 260 milliin. 



Lake Tanganjika. — Type in Congo Miiscuni, Teivuerrn. 



Fig. 80. 



Mastatemhdus eUi2>sifer. 

 Tj-pe (A. M. C). 1. 



23. MASTAOEMBELUS MARMORATUS. 

 Tenigin. Ann. Mus. Genova, (2) x. 1S^2, \>. 908 ; Boulcng. Tr. Zoal. Soc. xv. 

 1^':^^, \K 23, anil Toiss. Bass. Conoo, p. i'?r> HOOl). 



Depth of body nearly 20 times in total length, length of head 7 to 

 9 times. Vent equally distant from head and from caudal. Uostrnl 

 appendage twice as long as eye ; mouth extending to iielow posterior 

 border of eye ; no pr;rorbital spine ; two small prceopercular spines. 

 Dorsal XXX-XXXII So ; distance between first spine and head f 

 length of latter. Anal 11 70. Caudal rounded. Scales very small, 

 17 between origin of soft dorsal and lateral line. Yellowish, with 

 brown network enclosing icnind spots disposed irregularly ; dorsal 

 yellowish white, spotted with dark brown, anal with a single scries of 

 brown spots. 



Total length 230 millim. 



Lower Congo. — Tvpes, in Genoa Muscnm, examined. 



24. MASTACEMBELUS BKEVK AUDA. 

 Boideng. Ann. & Mag. N. 11. (8) viii. 1911, p. 038. 



Depth of body 13 to 14 times in total length, length of head 7 to 8^ 

 times. Vent equally distant from head or prseoperciiliun and from 

 caudal, its distance from head o to 3| times length of latter. Snout 

 3 times as long as eye, ending in an appendage which is as long as eye; 



