]\IASTACEMBELUS. 



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. 



'.rotal length 445 millim. 



(Jnan/a lliver, Angola. 

 1. Tvpe. Q'uiiiza R. Dr. W. J. Ansorge (C). 



Fi;:. 70. 



Masticfmhdas congicns. 

 Monst'inbe. |. 



II. MASTACEMBELUS CONGHCUS. 

 IJoulcnj;-. Ann. & Miig. N. II. (O) xvii. I8it0, p. 311, Tr. Zool. Soo. xv. LSD^S, 

 p. 23, and Toiss. Bass. Conf^o, p. iOi (11)01). 



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 pr^opercular spines. IJorsal 

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

 is 1-j times as long as eye ; distance between iirst spine and head y to 

 "I length of latter. Anal 111 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 \\ith 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 tlie anal. 



Total length 3(30 millim. 



Congo, Gaboon. 



