1132 Bulletin 47, United States National Museum. 



LEpiBEMA(Ae7rt's, scale; /3^/u.a, a staircase, from the scales at base of dorsal) : 

 a. Teeth on base of tongue in a single patch; body rather deep and compressed, the depth 



more than % the length; back arched. 



6. Color whitish with several narrow dusky lateral stripes following the rows of scales; 

 second anal spine about 3 in head. CHRYSOPS, 1529. 



ROCCUS : 



rttt. Teeth on base of tongue in 2 parallel patches; body rather elongate, the depth less than 



% the length; back not arched. 



bb. Color brassy or greenish, sides with 7 or 8 continuous dark stripes; second anal spine 

 5 in head. LINEATUS, 1530. 



Subgenus LEPIBEMA, Rafinesque. 



1529. ROCCUS CHBYSOPS (Rafinesque). 



(WHITE BASS ; WHITE LAKE BASS.) 



Head 3$ ; depth 2| ; eye 5 in head ; snout 4fr. D. IX-1, 14 ; A. Ill, 11 or 

 12 ; scales 10-55 to 65-15, 53 to 61 pores. Body rather deep and com- 

 pressed, the depth more than the length; back considerably arched; 

 head subconical, slightly depressed at the nape; mouth moderate, nearly 

 horizontal, the lower jaw little projecting; eye large, nearly as long as 

 snout ; maxillary reaching middle of pupil, 2f in head ; teeth on base of 

 tongue in a single patch, a patch also on each side of tongue ; margin of 

 subopercle with a deep notch ; head scaled to between nostrils ; preoper- 

 cular serrae feeble, strongest at the angle ; gill rakers rather long and 

 slender, x -f- 14, as long as gill fringes ; longest dorsal spine 2 in head ; 

 anal spines graduated ; second anal spine 3 ; middle caudal rays If in 

 outer. Color silvery, tinged with golden below ; sides with narrow 

 dusky lines, about 5 above the lateral line, 1 along it, and a variable 

 number below it, these sometimes more or less interrupted or transposed. 

 Length 15 inches. Great Lake region, upper Mississippi and Ohio valleys, 

 south to Washita River ; not found east of the Alleghanies nor in salt 

 water ; rare in the Ohio Valley ; generally abundant in the Great Lakes. 

 It frequents deep or still waters, seldom ascending small streams. (xpvab$ , 

 gold; ^V? e J e -) 



Perca chrysops, RAFINESQUE, Ichthyologia Ohiensis, 22, 1820, Falls of the Ohio. 



Labrax multilinealus, CUVIER & VALENCIENNES, Hist. Nat. des Poissons, in, 488, 1830, Wabash 



River; GUNTHER, Cat., i, 67, 1859. 

 Labrax nolatus (HAMILTON SMITH) RICHARDSON, Fauna Boreali-Americana, in, 8, 1836, Lower 



St. Lawrence River; GUNTHER, Cat., i, 67, 1859. 



Labrax albidus, DE KAY, Nat. Hist. N. Y.: Fishes, 13, pi. 51, fig. 165, 1842, Buffalo. 

 Labrax osculatii, FILIPPI, Rev. et. Mag. de Zoologie, 2d series, v, 164, 1853, Canada; G(JNTHER, 



Cat., i, 65. 

 Roccus chrysops, GILL, Ichth. Rep. Captain Simpson's Surv. Great Basin Utah, 391, pi. 1, figs. 1-7, 



1876; JORDAN & EIGENMANN, I. c., 422, 1890. 

 Morone muUilineata, BOULENGER, Cat., i, 128. 



Subgenus ROCCUS. 

 1630. ROCCUS LINEATUS (Bloch). 

 (STRIFES BASS ; ROCKFISH , ROCK.) 



Head 3i to 3 ; depth 3 to 4, varying considerably with age, the young 

 being more slender. D. IX-1, 12; A. Ill, 11 ; scales 8-67-11. Body rather 



