282 V. s. BUREAtr of fisheries 



Genus 749. STIZOSTEDION 5' Rafinesque. Ainerican pike perches. 



Stizostedion Rafinesque, Ichth. Ohiensis, 1820, 23 {Perca salmonea 



Rafinesque = Perca vitrea Mitchill). 

 Stizostethium, attempted correction. 



2181. Stizostedioii ritrsura (Mitchill). Walleye; Wall-eyed pike; Pike perch; 



Dory; Glass-eye; Yellow pike; Blue pike; Jack salmon; White-eye; 

 Spike (small specimens about 8 inches long, at Maumee Bay, 

 Sandusky Bay, Port Clinton, etc.); Pickerel; River trout. 



Great Lakes region, upper Mississippi, north to Assiniboia; east to 

 Vermont and Pennsylvania; south to Georgia and Alabama; espe- 

 cially common northward. 



Perca vitrea Mitchill, Am. Month. Mag., II, 1818, 247, Cavuga Lake, 

 N. Y. 



Lxicioperca americana Cuvier and Valenciennes, Hist. Nat. Poiss., II, 

 1828, 90 (122), pi. 16, New York. 



Perca salmonea Rafinesque, Amer. Month. Mag. Ill, 1818, 354, Ohio 

 River. 



2182. Stizostedion glaucum Hubbs. Blue pike. 



Great Lake region. 



Stizostedion glaucum Hubbs, Univ. Mich. Mus. Zool., Misc. Publ. No. 

 15, July 7, 1926. 58, PI. IV, fig. 1, Lake Erie. 



Genus 750. CYNOPERCA Gill and Jordan. 



Cynoperca Gill and Jordan, Bull. U. S. Nat. Mus., X, 1877. 44 (Lucio- 

 perca canadensis C. H. Smith, in Griffith's edition of Cuvier's Regne 

 Animal). 



2183. Cynoperca grisea (DeKay). Sanger; Sand pike; Gray pike; Pickering. 



Great Lakes region and westward to Montana, Tennessee, and Arkansas; 



the common species which varies northward into the next. 

 Lucioperca grisea DeKay, New York Fauna: Fishes, 1842, 19, New 



York. 

 Lucioperca borea Girard, Proc. Acad. Nat. Sci. Phila., 1857, 201, Fort 



Sarpi, Nebr. 

 Lucioperca pepinus Estes, in Hallock's Sportsman's Gazetteer, 1827, 



322, Lake Pepin. 



2184. Cynoperca canadensis (Smith). Sanger; Sand pike; Gray pike. 



Northeastern North America, from Vermont to the Great Lakes. 

 Lucioperca canadensis C. H. Smith, in Griffith's edition of Cuvier's 

 R^gne Anim., Fishes, 1836, 275, Canada. 



Family 186. ETHEOSTOMIDiE Darters 



We begin this series with the species most nearly related to the Percidx, 

 from which the darters are apparently descended. Percina is the 

 most primitive genus, and in most respects the highest, the other 

 forms being progressively specialized to their life in swift brooks. 

 From Percina two lines diverge in different directions; the allies of 

 Crystallaria and Vigil to Ammocrypta toward a quiescent life, buried 

 in sand; the other through Pacilichthys, Nothonotus and Oligocephalus 

 for life in weedy brooks, culminating in Microperca and Alvarius, the 

 lowest forms. 



Genus 751. PERCINA Haldeman. Log perches. 



Percina Haldeman, Jour. Acad. Nat. Sci. Phila., VIII, 1842, 330 (P. 



nebulosa Haldeman = .Sct«na caprodes Rafinesque). 

 Pileoma DeKay, New York Fauna: Fishes, 1842, 16 (P. semifasciata 



DeKay — Etheosto7na caprodes Rafinesque). 



*' The European genus Sander Oken (Lucioperca Cuvier and Valenciennes) differs from Stizostedion in 

 the close-set ventrals and the less close approximation of the anal spines. 



