272 CUKOMIDES. 



1 1 . Chromis lateralis. 



Tilapia lateralis, Dumer. Ami. Mus. x. p. 253. 

 D.ii. A. i-. 



12 10 



Scales below the eye in two series. The height of the body is 

 more than one-half of the total length (without caudal). Brownish, 

 with a blackish lateral blotch extending over three-quarters of the 

 length of the body. (Dum.) 



Senegal. 



12. Chromis melanopleura. 



Tilapia melanopleura, Dumer. Atiti. Mus. x. p. 252. pi. 22. tig. 1. 

 D. 1^. A. i-. 



12 9 



Scales below the eye apparently in six series. Brownish ; sides of 

 the trunk blackish. {Dxm.) 

 Senegal. 



13. Chromis microcephalus. 



Melanogenos microcephalus, Bleek. in Hit. 



B. 5. 'D.n^2- ^-l- ^- ^^*- 2^- ^- transv. 3/11. 

 Teeth very slender, flexible, in several series ; scales below the 

 eye in two series ; snout obtusely conical, much longer than the eye ; 

 caudal slightly emarginate ; the soft dorsal extends to, or nearly to, 

 the middle of the caudal. A dark spot on the operculum. The 

 length of the head is contained thrice and three-fourths in the total 

 (with the caudal). 



a-h. Seven inches long. Western Africa. From the Haslar Col- 

 lection. 



Description. — The height of the body is one-half of the total length 

 (without caudal), the length of the head is contained twice and two- 

 thirds in it. The upper profile of the snout is slightly convex, 

 descending obliquely downwards. Snout much longer than the eye, 

 slightly elevated ; cleft of the mouth somewhat oblique, as long as 

 broad, with the lower jaw slightly projecting beyond the upper. 

 Teeth very small and slender, flexible, in five or six series, those of 

 the outer series being the longest, forty-five on each side of the upper 

 jaw; only a very few of them show a notch at the brown apex. 

 Interorbital space broader than the orbit, convex. The naked por- 

 tion of the praeopcrculum is higher than long, and as wide at the 

 angle as the scaly part below the eye. 



The pectoral is composed of fourteen raj's, and the third and fourth 

 are so much prolonged as to extend to the origin of the soft anal. 

 Ventral pointed, not reaching to the vent. 



Scales cycloid, large, higher than long ; (me of the largest covers 

 the orbit. 



Greenish, shining golden ; a dark spot on the operculum ; the soft 

 dorsal with indistinct whitish spots. 



