LAMPEOLOaUS. 



467 



snout as long as or a little longer than eye, which is 3J times in length 

 of head and equals iuterovbital width; mouth extending to between 

 nostril and eye ; canine teeth small ; head naked ; pits of sensory 

 canals very large. Gill-rakers very short, 9 on lower part of anterior 

 arch. Dorsal XVI-XVII 10-11 ; spines increasing in length to the 

 last, which measures nearly ^ length of head and a little less than 

 longest soft rays. Anal V 6. Pectoral § length of head. Ventral 

 reaching anal or a little beyond. Caudal rounded. Caudal peduncle 

 scarcely longer than deep. Scales 37-42 jy^Yg, very small on nape and 

 belly ; lateral lines jq^jj;. Olive, with five dark cross-bars on the back, 

 the first on the nape and descending to the gill-cover, the three 



Fig. 319. 



Lamprologus trelocephalus. 

 Type (A. M. C). 



following produced on the base of the dorsal fin, the last on the caudal 

 peduncle. 



Total length 140 millim. 



Lake Tanganyika. — Type in Congo Museum, Tervueren. 

 1, Jlo-r. Kigoma. Ur. W. A. Cunnington (C). 



8. LAMPROLOGUS HECQUI. 



Bouleng. Ann. Mus. Congo, Zool. i. p. 115, pi. xliv. fig. 1 (1899), and Poiss. Bass. 



Congo, p. 403 (1901) ; Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 293 ; 



Bouleng. Tr. Zool. Soc. xvii. 1906, p. 5.59. 



Depth of body 3^ to 3f times in total length, length of head 3 times. 



Head iw ice as long as broad. Suout not longer than diameter of eye, 



2n2 



