248 THE CANADIAN NATURALIST. [Aug. 



TELEOSTEI. 



Order Teleocephali. 



Sub-order Acanthopterygii. 



PERCID^E Gill. 



Percinje (Bon.) Gill. 



Anal fin with two spines. Vertebrae in increased numbers 

 (10 + x | 14 + ?/). 



Genus Perca Linn. 



Teeth villiform. Dorsal fins distinct. D. xiii-xv. i-ii. 

 13-14. A. ii. 6-9. 



Perca fiavescens Mitch. Yellow perch ; Perch. (Perley.) 

 Perca fiavescens, Scorer, Mem. Am. Ac. v, 52, pi. ii, fig. 1. 



Labracin^e Gill. 



Anal fin with three spines. Vertebrae generally in normal num- 

 ber (10 -11 | 14-15). 



The genera Boccus and Morone differ even more decidedly in 

 anatomical than xternal characters. 



Genus Roccus Gill ex Mitch. 

 Tongue with eeth at middle. Dorsal fins almost distinct. 

 D. ix. i. 12-14. A.iii. 10 -13. 



Roccus lineatus Gill. Striped bass. (Perley.) 



Labrax lineatus, (C), Storer, Mem. Am. Ac. v, 54, pi. i, fig. 4. 



Genus Morone Gill ex Mitch. 

 Tongue with no teeth in middle. Dorsal fins connected at base. 

 D. ix. i. 12-14. A.iii. 7-11. 



Morone Americana Gill. White perch. (Perley.) 

 Labrax rufus, Storer, Mem. Am. Ac. t, 57, pi. i, fig. 1. 



CENTRARCHID^E Gill. 

 Lepomin^e Gill. 

 Soft parts of dorsal and anal fins equal and opposite to each 

 other. 



Genus Pomotis (Raf.) Gill. 



D. x 10-12. A. iii. 10-12. Pharyngeal bones closely contiguous, 

 with paved teeth. 



Pomotis aureus Gill ex Walb. Sun-fish. (Perley.) 



Pomotis vulgaris, Storer, Mem. Am. Ac. v, 60, pi. iii, fig. 1. 



