CENTRARCHID^. 



31 



The most striking differences are shown in the following comparative 

 table of characters : — 



C. macropteru8,(Lac.) .Tor., 

 Ocmulgee River, Ga. 



C. irideus, (Lac.) C. &. V., 

 Coosa River, Ala., Neuse 

 River, N. C. 



Dorsal rays (usually) , 



Anal ray8(usually) 



Head in lengt h 



Depth in length 



Lateral line 



Ventral spine in head 



Ventral spine reaching 



Longest dorsal spine in head .. 

 Longest soft dorsal ray in head 

 Longest soft anal ray in head.. 

 Mandible 



XII, 12 



VI1I,14 



3 



2i 



5-43-12 



1| 



4th anal spine 



H 



1* 



H 



More than half head 



XI, 12. 

 VII, 14. 



5-44-14. 



2i. 



Not to vent. 



li. 



11. 



li- 



Less than half head. 



The coloration in the two species appears to be essentially the same. 



GENERA OF CENTRARCHID^. 

 Prof. Gill uow recognizes sixteen genera of CentrarcMdw, for which 

 he suggests the following sequence, beginning with the most general- 

 ized type, Micropterus. 



■ Subfamily Micropterin^, Gill. 

 1. Micropterus^ Lacepede. 

 Subfamily Lepiopomin^, Gill. 



§1. 



4. Archoplitefi, Gill. 



5. Acantharchusj Gill. 



§2. 



9. Xystroplites, Jordan. 

 10. Eupomotis^ Gill & Jordan. 



2. Chcenohryttus, Gill. 



3. Amhloplites, Raf. 



6. Apomotis, Kaf. 



7. Lepiopomus, Eaf. 



8. Xenotis, Jovdan. 



§3. 



11. 3Iesogonistius, Gill. 



§4. 



12. Enneacanthus, Gill. 



13. HemiopUtes, Cope. 



14.. Conelavdia, Jordan. 



I 



