HEMICHKOMIS. 



431 



flemicliromis f/itttatus, Giintli. Cat. t. c. p. 275. 



Hemichromis letourneuxii, Sauv. Bull. Soc. Philom. (7) iv. 1880, p. 212. 



Hemicliromis saharw, Sauv. t. c. p. 226 ; Holland, Eev. Scientif. (4) ii. 1904, 



p. 418, fig. 

 Hemichromis rolandi, Rauv. op. cit. v. 1881, p. 103 ; RollanJ, 1. c. 



Depth of body 2\ to .3 times in total length, length of head 2| to 3^ 

 times. Head 1^ to 2 times as long as broad ; snout with straight or 

 convex upper profile, as long as or a little longer than eye, shorter in 

 the very young; eye 2| (young) to 4 times in length of head, 1 to 1^ 

 times in interorbital width ; mouth extending to below anterior border 

 of eye, or not quite so far; middle outer teeth not or but feebly 

 enlarged ; usually one, very rarely two series of minute teeth, if any, 

 behind the outer; 3 to 5 series of scales on the cheek, width of 

 scaly part equal to or a little less than diameter of eye. Gill-rakers 



Hemicliromis btinaculutiis. 

 White Nile (F. N.). 4. 



short, 8 to 10 on lower part of anterior arch. Dorsal XIII-XV 9-13; 

 spines increasing in length to the last, which measures | to -| leno-th of 

 head and f to | longest soft rays. Anal III 7-9; third spine as long 

 as or shorter than last dorsal. Pectoral f to f length of h^ad, not 

 extending to vertical of origin of anal. Ventral produced into a 

 filament, reaching vent or anal. Caudal rounded. Caudal peduncle 

 a little deeper than long. Scales cycloid, 25-29 ^ ; lateral lines ^^4t' 

 Yellowish brown or red, with or without blue dots ; a large bluish-black 

 spot on the gill-cover, another on the middle of the side of the body, 

 and often a third at the base of the caudal fin, these spots sometimes 

 surrounded by a pale circle ; ill-defined dark cross-bars may be present 

 on the body ; small irregular dark spots sometimes present on the body; 



