MASTACEMBELUS. 



123 



band along the body, disappearing a little in advance of the vent ; a 

 dark band on each side of the head, and a vertical bar below the eye ; 

 fins yellow, with dark brown spots and oblique streaks. 



Total length 445 millim. 



Quanza River, Angola. 

 1. Type. Quanza R. Dr. W. J. Ansorge (C). 



Fig. 76. 



Mastncemhelus conrjicus. 

 Monseinbe. §. 



11. MASTACEMBELUS CONGICUS. 



Bouleng. Ann. & Mag. N. H. (6) xvii. 1896, p. 311, Tr. Zool. Soc. xv. 1808, 

 p. 23, and Poiss. Bass. Congo, p. 494 (1901). 



Depth of body 10 to 11 times in total length, length of head 6^- to 8 

 times. Vent equally distant from end of snout and from caudal, its 

 distance from head 2 to 3 times length of latter. Snout 3 to 4 times as 

 long as eye, ending in an appendage which is 1-^ to 2 times as long 

 as eye ; mouth extending hardly to below posterior nostril ; a strong 

 erectile spine below latter ; two strong prseopercular spines. Dorsal 

 XXV-XXVIII 85-90 ; spines increasing in length to the last, which 

 is 1^ times as long as eye ; distance between first spine and head f- to 

 -§ length of latter. Anal III 85-92 ; second spine longest. Caudal 

 rounded or obtusely pointed. Pectoral f to £ length of head. Scales 

 very small, 23-26 between origin of soft dorsal and lateral line. Brown 

 above, vermiculate or marbled with darker ; usually a lateral series of 

 V- or X-shaped dark markings ; belly white ; pectoral usually spotted 

 with black; dorsal spotted with black; a series of large round white 

 spots, edged with black, at the base of the anal. 



Total length 360 millim. 



Congo, Gaboon. 



