64 



MORMYRID/E. 



head, projecting very slightly beyond mouth ; latter small, its width 4 to 

 4-g- times in length of head : teeth truncate or feebly notched, 9 in upper 

 jaw, 10 in lower ; auterior nostril halfway between end of snout and eye, 

 on a line with centre of latter, posterior lower down and close to the 

 eye ; eye large, 4 to 4-g- times in length of head, 1-g- to 1^ times in inter- 

 orbital width. Dorsal 23-25, originating above 5th to 7th ray of anal, 

 its length about \ its distance from head. Anal 28-29, equally distant 

 from root of ventral and from root of caudal, or a little nearer latter. 



Fig. .46. 





im^' 



^y 



Marcusenius pulverulehtus. 

 Type (A. M. C). f. 



Pectoral pointed, as long as or a little longer than head, twice as long as 

 ventral, the extremity of which it reaches. Caudal with long pointed lobes. 

 Caudal peduncle 3 to 3^ times as long as deep, f to § length of head. 



15 



9-10 



50 scales in lateral lino, jg in transverse series on body, ^- between 

 dorsal and anal, 12 round caudal peduncle. Olive-brown, speckled with 

 black; fins blackish. 



Total length 100 millim. 



Upper Congo. — Types in Congo Museum, Tervueren. 



1-2. Two o£ the types. Coquilhatville. M. P. Delhez (C). 



3. Ad. Lindi R. M. M. Storms (C). 



3. MARCUSENIUS M ARCHIL 

 Petrocephalus marcltei, Sauv. Bull. Soc. Philotn. (7) iii. 1878, p. 100. 

 Mormyrus marchei, Sauv. N. Arch. Mus. (2) iii. 1880, p. .50, pi. ii. fig. 5 ; Guntli. 



Ann. & Mag. N. H. (6) xvii. 1890, p. 287. 

 Marcusenius marchii, Eouleng. Proc. Zool. Soc. 1898, p. 792. 



Depth of body Sj to 4 times in total length, length of head i\. to 5 

 times. Head nearly as long as deep ; snout rounded, f length of head, 



