472 



CICHLLD.E. 



in length of head and double interorbital width ; mouth extending to 

 below anterior third of eye ; 4 to 6 large canines in front of each jaw; 

 cheek naked. Dorsal XVIII-XIX 9-11. Anal VI 4-7. Pectoral 

 about f length of head. Caudal truncate, slightly emarginate. Caudal 

 peduncle longer than deep. Scales 00-62 j^f; lateral lines f^- 

 Brownish yellow ; a series of square brown spots, alternately larger and 

 smaller, along the base of the dorsal and a second series, 8 in number, 

 along each side. 



Total length 62 millim. 



Lake Tanganyika. — Types in Vienna Museum. 



Fig. 324. 



Lamproloyus elonyntus. 

 Type (Tr. Z. S. 189S). 



14. LAMPROLOGUS ELONGATUS. 



Bouleng. Tr. Zool. Soc. xv. 1898, p. 9, pi. i. fig. 6, Poiss. Buss. Congo, p. 398 



(1901), and Tr. Zool. Soc. xvii. 1906, p. 556. 

 Lepidiolamprologus ehngatus, Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 295. 



Depth of body 3f to 4-| times in total length, length of head 2f to 3 

 times. Head 2^ to 2J times as long as broad, with slightly convex 

 upper profile ; snout If (young) to 3 times diameter of eye, which is 

 4-| to 8 times in length of head and 1 to 1^ times in interorbital width ; 

 chin slightly projecting ; mouth extending to below anterior border of 

 eye; 6 to 8 large canines, wide apart, in front of each jaw, followed by 

 a band of minute teeth, this baud narrow in the young and broad in the 

 adult; lateral teeth small; cheek naked in the young, covered with 

 very small scales in the adult. Gill-rakers rather short, 9 to 12 on 

 lower part of anterior arch. Dorsal XVII-XVIII 10-11 ; spines 

 increasing in length to the last, which measures ^ length of head ; 



