502 



CICHLIDJE. 



I. XENOOHROMIS HECQUI. 

 Bouleng. 11. cc, Ann. pi. xlvii. fig. 3, 'and Tr. Zool. Soc. xvi. 1901, p. 159; 

 Pellegr. 1. c. 



Depth of body equal to length of head, 3j to 3J times in total length. 

 Head twice as long as broad ; snout broader than long and convex, as 

 long as eye in young, a little longer in adult; eye 3| to 4 times in 

 length of head, 1 to ]-J times in interorbital width ; lower jaw projecting 

 a little beyond upper; mouth extending to below anterior border of 

 eye; 34 to 46 teeth in upper jaw, 30 to 40 in lower; interocular 

 region scaly, convex ; 4 or 5 series of scales on the cheek. Gill-rakers 

 as long as gill-lamella?, slender, closely set, 45 to -52 on lower part of 

 anterior arch. Dorsal XVI-XVII 10-11 ; spines subequal from the 

 seventh, \ to -f length of head ; longest soft rays % to | length of head. 

 Anal 111 9-10; second and third spines equal, stronger and a little 



Fig. 348. 



Xenochromis hecqai. 

 Type (A. M. C). 



2 

 3" 



shorter than dorsals. Pectoral nearly as lon«; as head. Ventral 

 reaching vent or beyond origin of anal. Caudal with deep creseentic 

 notch. Caudal peduncle 1-g- to 1| times as long as deep. Scales 64-G7 25 ; 



lateral lines 3^3 ; 4 series of scales between the lateral lines anteriorly. 

 Olive above, whitish beneath, with more or less distinct dark bars across 

 the back on the posterior half of the body ; a blackish opercular spot. 



Total length 270 millim. 



Lake Tanganyika. — Types in Congo Museum, Tervueren. 



1-2. Ad. Usambura. Prof. J. E. S. Moore fC). 



3. Skel. „ ,. 



4. Hgr. Moliro. Pr. W. A. Cunnington (C). 



