4. HEMicnROMis. 275 



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

 oblique and interrui^ted streaks. 

 Guinea. Itiver Gaboon. 



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



2. Hemichromis auritus. 



Gill, Proc. Acad. Nat. Sc. Philad. 1862, p. 136. 



D. {^. 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 

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

 late, {am.) 



River Gaboon. 



3. Hemichromis bimaculatus. 

 Gill, Proc. Acad. Nat. Sc. Philad 1862, p. 1-17. 



D. i^. A. J. 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 above 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, excejit 

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



River Gaboon. 



4. Hemichromis guttatus. 

 D. jii-^. A. |. L. lat. 26. L. transv. 3/9. 



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

 the others. Scales on the check 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. 



Capo Colony. 



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



Descri2:)t ion. —The height of the body equals the length of the head, 

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

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

 of the snout is not concave as in H. fascia t us. Snout short, scarcely 

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

 length of tlie head ; deft of the mouth oblique, of moderate width, 

 with the lower jaw slightly prominent, and with the maxillaij ex- 

 tending to below the anterior margin of the eye. J'ra>orbital much 



t2 



