Kendall — Noteson Percopsis guttatus and Sal hid omiscomaycus. 51 



strong spines ; lateral line imperfect, the tubes more or less 

 obsolete; form robust, the substance more or less opaque. 



Colli illbii I . 



Percopsis omiscomaycus. (Walbaum). 



Omisco Maycus, Pennant Arctic. Zool. In trod., p. CXCII, 1784; 



(ibid, Second Ed. p. CCXCVIII, 1792). 

 Salmo Ormisco Maycus, Walbaum, Artedi Gen. Pise., p. 65, 



1792; (after Pennant). 

 Percopsis guttatus, Agassiz, Lake Superior, p. 286, pi. I, fig. 1 



and 2, 1850. 

 Salmoperca pellucida, Thompson, Hist. Vermont, second ed., 



appendix, p. 33, with figure, 1853. 

 Percopsis hainmondi, Gill, Proc. Ac. Sci., Phila., 1864, p. 151. 



"Head 3f ; depth about 4£ ; D. II, 9 ; A. I, 7; V. I, 8; 

 scales 50, head slender and conical ; mouth small, subinferior, 

 maxillary not nearly reaching front of orbit. Caudal peduncle 

 long and slender. Pale olivaceous, a silvery stripe along the 

 lateral line, becoming obsolete forward; upper parts with 

 obscure round dusky spots made of dark points, peritoneum 

 silvery. Length 6 inches. Spawns in spring. Delaware River 

 (Abbott) to Ohio River (Sloan; Gilbert); Kansas and north- 

 ward ; very abundant in the Great Lakes ; in all streams trib- 

 utary to Hudson Bay, Red River of the North, and found by 

 Eigenmann in the Saskatchewan as far as Medicine Hat ; rare 

 in streams south of Lake Erie, although occasionally taken 

 throughout the upper Mississippi Valley." [Jordan and Ever- 

 mann.] 



Specimens from Hudson Bay region in the general locality of 

 Albany River are reported from Moose Factory, at the mouth 

 of Moose River, emptying into James Bay or southern extrem- 

 ity of Hudson Bay, which is the next considerable river shown 

 on map, south of Albany River. 



Specimens also from Nelson River a long distance north of 

 Albany River and flowing directly into Hudson Bay. [Bean 

 in Proc. U. S. Nat. Mus., 1881, pp. 127 and 128.] 



