LAMPREYS AND FISHES OF INDIANA. 251 



4. Tongue and pterygoid bones without teeth. 



b. Depth usually more than one-third the length ; 

 scales along the lateral line fifty or fewer. 



Lepo7nis, p. 255 

 bb. Depth one-third of the length or less ; scales of 

 the lateral line about seventy. 



3ficropterus, p. 262 



Genus POMOXYS Rafinesque. 



Body deep and compressed. Anal fin about as large as the dorsal; its 

 spines six or seven ; its soft ra.js seventeen or eighteen. Maxillary with 

 a supplementary bone. Teeth on the vomer and palatines. Gill-rakers 

 long and slender. Snout turned up. Scales ctenoid. 



Dorsal spines seven or eight ; anal mottled with dark green. 



sparoides, p. 251. 



Dorsal spines six ; anal nearly plain whitish. anmdaris, p. 252. 



POMOXYS SPAROIDES (LaC). 



Calico Bass; Grass Bass. 



Jordan and Gilbert, 1882, 8, 465 ; Jordan, 1884, 12, 406, pi. 159 ; 

 Smith, H. N., 4, 209, pi. 42. 



Body high and much compressed. Outline of back descending in both 

 directions from the front of the dorsal. Over the eye the outline be- 

 comes concave. Lower jaw projecting considerably beyond the upper. 

 Depth in the length two to two and one-half. Head in length three to 

 three and one-half. Mouth moderate, the maxillary equal to the dis- 

 taace from the snout to the back of the eye. Cheeks with about six 

 rows of scales. Opercles well scaled. Lateral line complete, running 

 high. Scales mostly cycloid, 7-44-12. Dorsal rays VII or VIII, 15. 

 Anal rays VI, 17 to 18. Color olive above, the sides silvery. With 

 many irregular blotches of dark green. These scattering on the lower 

 part of the sides, more numerous above, and running together so as to 



Genus CENTRARCHUS C. and V. 



Body deep and compressed. Dorsal fin little larger than the anal ; the spines of the 

 latter seven or eight ; the soft rays fifteen. Maxillary with a supplemental bone. Teeth on 

 vomers and palatines. Gill-rakers long and slender. Scales feebly ctenoid. 



Centrabchus macropterus C. and V. 



This species h.as not yet been taken in Indiana. It is a common fish in the lowlands of 

 the Southern States, and has been taken in considerable numbers in the southern part of 

 Illinois. It may, therefore, be confidently looked for in the region of the lower Wabash 

 River. 



The depth is contained in the length about two times, the head a little more than three 

 times. Dorsal rays XI or XII, 12. Anal rays VII or VIII, 15. The color is olive, with rows 

 of dark spots along the sides. 



