ir;0 ADDEND.^, VOL. 1. 



darker on the bacl<, siiottcd iiiiJ niarhk'tl with dark brown ; fins 

 brown. 



Total length 70 millim. 



Lake Ngami Basin, Bechuanaland. 

 1-1'. Type.-;. Okovango li. K. B. Wocsnam, Es.j. (C). 



Distinguished from 21. Ihuz/aii by the lower uuniber of dorsal and 

 anal fin-rays. 



8h. MARCUSENIUS BKEVIS. 

 Boulcng. Rev. Zool. Ah. ii. I'.U;'., \k l.oG. 



Depth of body 2f to 3 times in total length, length of liead 3| to 3| 

 times. Head as long as deep ; snout rounded, } lengtli of head, pro- 

 jecting a little beyond mouth ; mouth small, well below level of lower 

 border of eye; teeth moderate, notched, 7 in upper jaw, 8 in lower; 

 eye as long as snout, its diameter not quite | interocular width ; 

 posterior nostril a little lower down than upper, close to eye. Dorsal 

 19, originating above 4th or 5th ray of anal, its length ^ its distance 

 from head. Anal 24-26, nearer caudal than base of ventral. Pectoral 

 a little shorter than head, not reaching extremity of ventral. Caudal 

 with pointed lobes. Caudal peduncle twice as long as deep, f length 

 of head. 42-44 scales in lateral line, ^^\i iu transverse series on body, 

 S in transverse series between dorsal and anal, 12 round caudal 

 peduncle. Brownish, head darker, with dark dots and irregular spots. 



Total length 60 millim. 



Uelle, Upper Congo. — Type in Congo Museum, Tervuercn. 

 1. One of the types. Dungu, Upper Uelle. Capt. Hutcn-aii (('.). 



Distinguished from M. IhuijHii by the lower niunbcr of scales in the 

 lateral line. 



'J a. MARCUSENIUS HUTEREAUI. 

 Boulcng. Rev. Zool. Air. ii. I'.tli^ p. 155. 



Depth of body 3 times in total length, length of head 4 times. Head 

 as long as deep ; snout very short, rounded, strongly jjrojecting beyond 

 the mouth, which is situated below the eye; width of mouth '6h times in 

 length of head; teeth very small, bicuspid, 7 in upper jaw, 8 in lower; 

 nostrils on a line with centre of eye, posterior nearly touching eye, which 

 is longer than snout, i\ times in length of head, and \\ times in inter- 

 ocular width. Dorsal 19, originating above 10th ray of anal, its ba.se 



