4. HEMICHROMIS. 275 



on the operculum ; dorsal and anal fins with more or less distinct 

 oblique and interrupted streaks. 

 Guinea. River Gaboon. 



a-b. Fine specimens. West Africa. Presented by C. Swanzz, Esq. 



2. Hemicliromis auritus. 

 GUI, Proc. Acad. Nat. Sc. Philad. 1862, p. 135. 



D. 1^. A. |: L. lat. 25. L. transv, 3/9. 



The two middle teeth in the upper jaw are considerably longer 

 than the others. Scales on the cheek in four series. The height of 

 the body equals the length of the head, and is contained twice and 

 four-fifths in the total length (without caudal) . Snout conical, longer 

 than the eye. Brownish, with five black cross -bands ; angle of the 

 operculum with a black spot, partly edged with white ; fins immacu- 

 late, {am.) 



River Gaboon. 



3. Hemicliromis bimaculatus. 

 ■Gill, Proc. Acad. Nat. Sc. Philad. 1862, p. 137. 



D. JJ. A. 1. L. lat. 25. L. transv. 3/9. 



The two middle teeth of the upper jaw are larger than the others. 

 Scales on the cheek in three series. Snout a little longer than the 

 eye. The dorsal fin commences ab6ve the root of the pectoral. 

 Purplish-red, with a vertical black spot below the lateral line, below 

 the twelfth and thirteenth dorsal spines ; head immaculate, except 

 a black spot at the angle of the operculum. {Gill.) 



River Gaboon. 



4. Hemichromis guttatns. 



^- irT2- ^' I- ^' 1^^- ^^- ^' transv. 3/9. 



The two middle teeth of the upper jaw are scarcely longer than 

 the others. Scales on the cheek in three or four series. Snout ob- 

 tuse, scarcely longer than the eye. The dorsal fin commences before 

 the root of the pectoral. Operculum with a large black spot, another 

 on the side of the body ; sides of the head with round black spots. 



Cape Colony. 



a-h. Fine specimens. Purchased of Mr. Stevens. 



Description. — The height of the body equals the length of the head, 

 and is less than one-third of the total (the caudal not included). 

 Head a little longer than high, with the upper profile curved ; that 

 of the snout is not concave as in H. fasciatus. Snout short, scarcely 

 longer than the diameter of the eye, which is two-ninths of the 

 length of the head ; cleft of the mouth oblique, of moderate width, 

 ■svith the lower jaw slightly prominent, and with the maxillarj- ex- 

 tcntling to below the anterior margin of the eye. Prceorbital much 



t2 



