278 EXPLORATIONS IN THE FAR NORTH 



GYRINIDjE, 



Gyrinus maculiventris Lee. 

 Grand Rapids, one specimen. 



HYDROPHILIDjE. 



Hydrobius fuscipes Lin?i. 



Slave Lake. Common in Europe; in this country it extends 

 across the northern half of the continent, from the Atlantic to 

 Oregon and thence along the Pacific coast down to Southern 

 California. 



SILPHIDiE. 



Necrophorus pustulatus Hersck., var. melsheimeri Kirby. 



Grand Rapids. A widely distributed northern form. 



Silpha lapponica Herbst. 



Grand Rapids and Fort Smith. Common in the northern 

 and western portions of this continent and in the north of 

 Europe. 



STAPHYLINIDjE. 



Arpedium cribratum Fauv. 



Slave Lake. 



COCCINellid^e. 



Coccinella transversoguttata Fald. 



Slave Lake and Fort Rae. Abundant in parts of Canada 

 and the Rocky Mountain region of the United States; occurs 

 also at Lake Superior, in Greenland, California and Mexico. 



Coccinella monticola Muls. 



Slave Lake. Also occurs at Lake Superior, in Oregon, Van- 

 couver Island, and the Rocky Mountains of Colorado. 



ELATERID.E. 



Corymbites morulus Lee 



Fort Rae. Known also from Colorado. 



BUPRESTID^E. 



Dicerca tenebrosa Kirby. 



Fort Smith, Found not uncommonly in Canada and the 

 states adjoining the Great Lakes. 



