PlilSTIPOMA.— DIAGRAMMA, 



127 



spot; a series of round blackish spots at the base of the dorsal fin, 

 between the rays, sometimes with a second series higher up. 



Total length 290 millim. 



West Coast of Africa, from the Senegal to Angola. — Type in Paris 

 Museum. 



1-6. Ad. & yg. 



7. Hgr. 



8. H<rr. 

 9-10. Hgr. 



11. Skel. 



12. Ad. 



13. Ad. 

 U. Yg. 

 1.5. Hgr. 



16. Ad. 



17. Yg. 



18-19. Yg. 

 20-21. Ad. & ligr. 

 22. Ad. 



2;}-24. Yg. 



St, Louis, Senegal. 

 Nanna Kru, Liberia. 

 Degama, Lower Niger. 

 Niger, 



Benito R. 



Cliiloango Town. 

 (*hiloango R. at May Hi. 

 liOingo R., ;it N'kutii. 

 Landaiia. Lower Congo. 



Banana, Lower Congo. 



Angola. 



Quanza R., at Cunga, 



Angola. 

 Bengo R., at Quifan- 



gondo, Angola. 



M. P. Delhez (C). 

 W. P. Lowe, Esq. [C). 

 Dr. W. J. Ansorge ((L). 

 Mr. J. T. Dalton (C). 



W. A. Forbes, Escj. (P.). 

 G. L. Bates, Esq. (C). 

 Dr. W. J. Ansorge (C). 



Dr. Jackson (C.) ; 



Hon. W. Rothschild (P.). 

 Capt. Wilverth (C). 

 R. J. Cunninghame, Esq. (P.). 

 Dr. W. J. Ansorge (C). 



2. DIAGRAMMA. 



Cuv. Regne Anim. 2nd ed. ii. p. 17G (1829); Cuv. & Yul. Hist. Poiss. v. p. 200 

 (1830); Gunth. Cat. Fish. i. p. 318 (1859); Bouleng. Poiss. Bass. Congo, 

 p. 388 (1901). 



Body oblong, compressed ; scales small or moderately large, ctenoid ; 

 lateral line complete. Mouth rather small, protractile, horizontal ; 

 maxillary folding under the pr^eorbital ; bands of villiform teeth in the 

 jaws ; 4 to 6 pits on the chin ; pr?eoperculum denticulate ; no opercular 

 spines. 6 or 7 branchiostegal rays ; pseu do branchiae large. Dcjrsal 

 with 9 to 14 spines, anal with 3. Ventrals a little behind vertical 

 of base of ventrals, with a scaly basal process. Vertebrae 26-27 

 (11 + 15-16). 



Tropical and subtropical seas, Mediterranean, some species entering 

 fresh waters. Two of these are dealt with here : — 



