MORMYKOPS. 39 



peduncle 2^ times as long as deep, J length of head. 90-93 scales in 

 lateral line, ^^ in transverse series on body, 21-23 in transverse 

 series between dorsal and anal, 18 round caudal peduncle. Pale 

 brownish. 



Total length 410 millim. 



Upper Congo (Upoto and Sanga R.)._Type in Congo Museum, 

 Tervueren. 



8. MORMYROPS SIRENOIDBS. 

 Bouleng. Ann. Mus. Congo, Zool. i. p. 4, pi. i. fig. 2 (1898), Proc. Zool. Soc. 1898, 

 p. 785, and Poiss. Bass. Congo, p. (52 (1901). 



Depth of body 0^ to 8 times in total length, length of head 4| to 6. 

 Head 1-^ to 1| times as long as deep, with straight, declivous upper 

 profile; snout rounded, projecting a little beyond the mouth; width of 

 mouth greater than length of snout; teeth truncate, 12 to 14 in each 

 jaw; eye very small, situated in the anterior third or fourth of the head, 

 its diameter 3 times in length of snout, 3^ to 4 times in interocular 



Pig. 25. 



Mormyrops sireiioides. 

 Type (A. M. C). i 



width. Dorsal 29-32, § or | length of anal, originating 1^ as far from 

 the end of the snout as from the base of the cavidal. Anal 45-47, 

 originating considerably in advance of dorsal (its 13th or 14th ray 

 corresponding to first dorsal), and at nearly equal distance from end of 

 snout and root of caudal. Pectoral rounded, about | length of head. 

 Caudal small, densely scaled, with rounded lobes. Caudal peduncle 

 2J times as long as deep, -^ length of head. 90-95 scales in lateral line, 

 -jg— in ti'ansverse series on body, 20 in transverse series between dorsnl 

 and anal, 16-18 round caudal peduncle. Uniform dark brown, somewhat 

 lighter beneath. 



Total length 630 millim. 



Upper Congo. ^ — Type in Congo Museum, Tervueren. 

 1-3. Hsr. Monsembe. Rev. J. H. Weeks (P.). 



