30 Book of the Black Bass. 



Small-Motjth. Lakge-Mouth. 



Scales of preopercular limb 

 None. Developed in an imperfect row 



{c. g., 3—0 in number ) . 



Scales on dorsal 



Developed as a deep sheath Developed as a low (obsolete) 



(involving last spine) of small shallow sheath, and with series 



scales differentiated from those ascending comparatively little 



on the back, and with series ad- on membrane behind the rays 



vancing high up the membrane (none behind the last five or 



behind each ray (except last two six) . 

 or three). 



Scales on anal 



Ascending high behind each None (or very few), 



ray. 



Mouth 

 Moderate. Large. 



Supramaxillary 

 Ending considerably in front Extending considerably be- 

 of hinder margin of orbit (about hind the posterior margin of 

 under hinder border of pupil ) . orbit. 



Rays 



Dorsal articulated, 13. Dorsal, articulated, 12 (I. 11). 



Anal III, 10-11. Anal III, 10. 



Pectoral, 1-16-1 -17. Pectoral, 1 • 14 (1-13). 



Dorsal fin in front of soft portion 

 Little depressed, the ninth JIuch depressed, the ninth 

 spine being only about a half spine being only about a fourth 

 shorter than the longest (3, 4, 5) as long as the longest and half 

 and a fourth shorter than the as long as the tenth, 

 tenth. 



