FAMILY PERCID^ PERCA. 5 



THE ROUGH YELLOW PERCH. 



FeHCA SEKRATO-GRANULATi. 

 PLATE XXII. FIG. M. 

 Laperche a operculcs gremis. Cdv. ct Val. Hist. Poiss. Vol. 2, [i. 47. 



Characteristics. With roughened radiated hues on the head. In other respects, resembling 

 tlic preceding species. 



Description. I have apphed this name to a yellow perch from Rockland county, which 

 appeared to present the characters assigned to it by Cuvier. I have nothing to add to the 

 description given by that author. It is thicker than P. Jluviatilis ; its cranium larger, and 

 with roughened radiating striae. The opercle has likewise roughened radiating stria?, and 

 is strongly toothed on its lower margin ; its upper lobe almost effaced, but its point is very 

 acute. In some individuals, the preopercle is smooth on two-thirds of its height, and has 

 only a few near the angle ; whilst in others, there are teeth throughout the whole extent. 

 Those on the lower margin are always more minute and numerous than in the European 

 species. The subopercle is toothed on two-thirds of its margin. 



Length, 6-0- 12-0. 



Fmrays, D. 14.2.13; P. 13 or 14; V. 1.5; A. 2.7; C. 17. 



The colors offer nothing essentially different from those of the preceding species, except 

 that the dark blotches on the first dorsal are scarcely visible. 



THE ROUGH-HEADED YELLOW PERCH. 



Perca granulata. 

 PLATE LXVllI. FIG. 230. 

 Laperche a tite grcnuc. Cuv. et Val. Hist. Poiss. Vol. 2, p. 18, pi. 9. 



Characteristics. Head roughened by granulations, disposed in radiating stria: on the parietals. 

 A black spot on the four last rays of the first dorsal. 



Description. Teeth of the vomer more robust than in P. Jluviatilis. Scales nearly smooth 

 on their margins : The opercle feebly striated, and with few dentations. Six distinct and well 

 defined bands. If the figure may be trusted for its coloring, the lower half of the veiitrals, 

 and the whole caudal, are blood red. The vent is near the anal fin. 



Fin rays, D. 1.3.3.13; P. 15; V. 1.5; A. 2.8; C. 17. 



I have never met with this species, and insert it on the authority of Cuvicr, who received 

 it from New-York through MM. Milbert and Lesueur. 



