MORMYKOPS. 39 



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



lateral line, j^j^ 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 S1RENOIDES. 



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

 p. 785, and Poiss. Bass. Congo, p. 62 (1901). 



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

 Head 1^ to If 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 



Fig. 25. 



I 



Mormyrops sirenoides. 

 Type (A.M. C). f 



width. Dorsal 29-32, § or f length of anal, originating H as far from 

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

 originating considerably in advance of dorsal (its loth 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 pednncle 

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

 -j^-in transverse series on body, 20 in transverse series between dorsal 

 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. Hgr. - , Monsemlic. Rev. J. H. Weoks (P.). 



