306 



G. A. BOULEJfGER 



Depth of body 2 72 times in total lengtli, length of head 

 3 times. Snout with concave upper profile, slightly longer than 

 eye, which is 4 times in length of head, 1 Y^ times in interor- 

 bital width, and equals depth of scaly part of cheek; lower jaw 

 not projecting; mouth oblique, with thick lips; maxillary extending 

 to below anterior border of eye; teeth forming broad villiform 

 bands, in about 7 series in upper jaw, 10 in lower; outer teeth 

 larger but very small, 56 to 60 in upper jaw; 3 or 4 series of 

 scales on the cheek; large scales on the opercle. 

 Gill-rakers short and stout, 8 on lower part of 

 anterior arch. Dorsal XVI 9 ; spines increasing 

 in length to the last, which measures ^/- length 

 of head, longest soft ray V2 length of head. 

 Anal III 9 ; third spine longest , Ys length of 

 head. Pectoral pointed, as long as, or slightly 

 shorter than head, extending as far as origin 

 of anal. Ventral reaching vent. Caudal trun- 

 cate or rounded, upper rays longer than lower. 

 Caudal peduncle slightly longer than deep. 



Dentition. 



28 — 22 



8-13 



Scales feebly denticulate, 33 - 35 7,^ — j-a ; lateral lines 



• ^ 15 ^ 16 ' 



Olive brown, darker above; pectorals and anal yellowish, 

 ventrals black; two bright ocellar spots on the anal. 



Total length 170 millim. 



Two specimens. 



Distinguished from P. refrodens by the concave snout and 

 smaller teeth. 



9. Paratilapia crassilabris, Blgr. 



10. Pelmatochromis spekii, Blgr. 



11. Platytaeniodus degeni, Blgr. 



The bands of teeth are not quite so broad in young specimens 

 as in the adult on which the genus and species were founded. 



12. Hemitiiapia bayoni, Blgr. 



13. Haplochromis desfontainesi, Lacep. 



14. Haplochromis Stanley!, Blgr. 



15. Haplochromis Ishmaeli, Blgr. 



16. Tilapla martini, Blgr. 



