468 NEW YORK STATE MUSEUM 



the last anal ray is opposite the last dorsal ray. First dorsal 

 spine shortest, one half the length of longest spine, which is 

 about three fifths as long as the longest ray. The spines and 

 rays of the anal are in about the same proportion to each other 

 as those of the dorsal, the first spine being the shortest and the 

 longest about three fifths as long as the longest anal ray. The 

 soft parts of the dorsal and anal are high and rounded. The 

 pectoral is rather short and broad. The ventral long and 

 slender, directly under base of pectoral. The lateral line is 

 complete, placed high on body and follows the contour of the 

 back. D. XI, 11; A. VI, 11. Scales 5-46-14. 



Color olive green with a brassy tinge and much dark mottling; 

 the young are pale or yellowish, irregularly barred and blotched 

 with black; adults with a dark spot at the base of each scale, 

 these spots forming interrupted black stripes; a dark spot on 

 the opercle; soft dorsal, anal, and caudal fins with dark mot- 

 tlings; iris golden overlaid with crimson. 



The rock bass is known under a variety of names. Among 

 them are the following: redeye, red-eyed perch, goggle-eye and 

 lake bass. It is found in Lower Canada, Vermont and through- 

 out the Great lakes region, west to Manitoba, and it is native in 

 Minnesota and Dakota; southward it ranges through the Mis- 

 sissippi valley to Texas. In the Ohio valley it is very common, 

 while in the Middle Atlantic states, east of the Alleghanies, it 

 has probably been introduced. Its existence in the Susque- 

 hanna has been known for many years. Whether it is indige- 

 nous in Pennsylvania waters is uncertain. It has been intro- 

 duced into some parts of Virginia, while in other portions of 

 that state it is native. It is indigenous in North Carolina. Its 

 distribution in Pennsylvania has been greatly extended by 

 artificial introduction, and it is now well established in the 

 Delaware, specially in its upper waters. De Kay records it from 

 Lake Champlain, the Great lakes and the larger streams in the 

 western counties of New York. Meek says it is a very common 

 and well known species in the Cayuga lake basin. In the Passaic 

 river and other waters it is an introduced species. Evermann 



