LAMPROLOGUS. 



467 



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

 of head and equals interorhital 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 



5-7 



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



9C)_34 



belly ; lateral lines ^0.-^;. Olive, with five dark cross-bars on the back, 

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



Fig. 319. 



Lainproloyiis treLocephalais. 

 Type (A. M. C). 



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

 })cduncle. 



Total length 140 millim. 



Lake Tanganyika. — Type in Congo Museum, Tervueren. 

 1. Hgr. Kigoma. Dr. AV. A. (;unnington (C.). 



8. LAMPROLOGUS HECQUI. 

 Bouleng. Ann. i\Ius Congo, Zool. i. p. 115, pi. xliv. fig. 1 (1809), and Poiss. Bas?. 

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

 Bouleng. Tr. Zool. Soc. xvii. 1906, p. 559. 



Depth of body oj to 3| times in total length, length of head 3 times. 

 Head twice as long as broad. Snout not longer than diameter of eye. 



