472 



CICHLIB.^. 



ill 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 60-62 j^g ; 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. 



Lamprolocjus elonynlus. 

 Type (Tr. Z. S. 1898). 



14. LAMPROLOGUS ELONGATUS. 



Bouleng. Tr. Zool. Soc. xv. 1898, p. 0, pi. i. fig. G, Poi:ss. Bass. Congo, p. 308 



(1901 ), and Tr. Zool. Soc. xvii. 1906, p. 550. 

 Lepidiolamprologvs elongatus, Pellegr. Mem. Soc. Zool. France^ xvi. 1904, p. 295. 



Depth of body 3f to i\ times in total length, length of head 2f to 3 

 times. Head 2j to 2^ 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 band 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; 



