410 



ON TirK ESOCES OP MIDDLE NORTH AMERICA. 



margin of orbit, hence with longer caudal peduncle than any of the preceding species and 

 varieties. Color uniform leaden, without bars or spots. Length 10 in., depth 1.5 in. 



Two specimens from the Susquehanna, procured by Jacob Stauffer, Sec. Linnsean So- 

 ciety, Lancaster. This may be typical of the E. umbrosus, as Prof. Kirtland does not 

 represent any lateral bars ; nevertheless, it cannot be decided from his description. 



In the three preceding species the band of vomerine teeth is nearly equal in length to 

 the palatine, sometimes a little longer, sometimes a little shorter. 



Esox reticulatus, Leseuer. 



The common pike of the large Eastern Atlantic coast streams ; not known from the 

 interior. Well figured by Storer, 1. c. 



Esox deprandus, Leseuer, Cuvier and Valenciennes, N. H. Poissons. 

 Not observed since Leseuer' s time ; from the Wabash. 



Esox Lucius, Linnaeus, Cuvier, Richardson. Cope, Proc. Acad., 1865, 79. Esox estor, 

 Leseuer, Journ. Acad. I, p. 413. 



The Great Lakes; Lake Whittlesey, Minnesota; John H. Slack, M.D. 



Esox nobilior, Thompson. 



Hist. Vermont, and Proc. Bost. Soc. N. II., 1850, 305, where this is rightly stated to 

 be the estor of Richardson. It is also evidently estor, Agassiz, Am. Journ. Sci. Arts, 

 xvi, p. 308, and formerly of Kirtland, but later correctly named by the latter, Cleveland 

 Annals of Science, 1854, p. 78; also E. lucioides, Agass. and Gir., in Frank Forester, by 

 Herbert. Fine specimens from Saginaw Bay, No. 228. A specimen is in the Academy 

 Museum from the Alleghany River, in Warren Co., Pa., and another was presented by 

 Thaddeus Norris, from Coneaught Lake, Crawford Co., Pa. The head of the latter 

 measures 12 in. 9 lin. in length, and 17.6 in circumference at the prcopercles. 



General habitat. The Great Lakes, River St. Lawrence, and Lake Champlain, 



