XENOTILAPIA.— GEAMMATOTR1A. 



45; 



2. XENOTILAPIA OBNATIPINNIS. 



Bouleng. Ann. & Mag. N. H. (7) vii. 1901, p. 3,Poiss. Bass. Congo, p. 442 (1901), 

 and Tr. Zool. Sop. xvi. 1901, p. 154, pi. xviii. fig. 2 ; Pellegr. Mem. Soc. 

 Zool. France, xvi. 1904, p. 370. 



Depth of body nearly equal to length of head, 3£ to 3-| times in total 

 length. Head as in the preceding. 15 to 17 gill-rakers on lower part 

 of anterior arch. Dorsal X11I-XV 12-13; spines subequal from the 

 fifth or sixth, f length of head. Anal III 7-8 ; third spine as long as 

 longest dorsals. Pectoral as long as or a little longer than head. 

 Ventral not reaching anal. Caudal deeply notched, crescentic. Caudal 



3 



peduncle If times as long as deep. Scales 34-37 ^ ; lateral lines 1* 



4 



28-32 

 (-18. 



12 



Fig. 308. 



Xenotilajjin ornatipinnis. 

 Type (Tr. Z. S. 1901). 



Pale brownish ; a more or less distinct silvery lateral band ; spinous 

 dorsal black-edged ; large blackish spots or oblique bars on the dorsal ; 

 upper lobe of caudal edged with blackish : a chevron-shaped blackish 

 band lower down on the caudal, disposed asymmetrically. 



Total length 110 millim. 



Lake Tanganyika. 



1-6. Types. Kibwesi. Prof. J. E. S. Moore (CV). 



7. Skel. 



24. GRAMMATOTRIA. 



Bouleng. Tr. Zool. Soc. xv. 1899, p. 90, and Poiss. Bass. Congo, p. 443 (1901) ; 

 Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 369. 



Body elongate ; scales ctenoid ; three incomplete lateral lines. Teeth 

 conical, the outer moderately large, the inner minute and forming a 



