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. Tyjie. Qnanza R. Dr. W. J. Ansorgc (C). 



Fiff. 76. . . 



Mastneemhelus congicus. 



11. MASTACEMBELUS CONGICUS. 

 Bouleng. Ann. & Mng. N. H. (G) xvii. 1896, p. 311, Ti-. Zool. Soc. xv. 1898, 

 p. Is, 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 

 lon<' as eye, ending in an appendage wliich is 1^ to 2 times as long 

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

 erectile spine below latter; two strong prteopercular 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 

 •1 leno-th of latter. Anal III 85-92 ; second spine longest. Caudal 

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

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

 above, vermiculate or marhled 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. 



