Sept.,i9io.] A List of Labrador Coleoptera. 187 



ard) ; Wingdale, N. Y. ; Golden, B. C, Waghorn, Alberta; Detroit, 

 Mich. (Sherman collection). Lake Superior, Hudson Bay, central 

 and northern Europe, east and west Siberia (Hamilton). 



75. Rhantus binotatus Harris. 



Labrador (probably). Packard list. Common in White Moun- 

 tains, both below and above the three line. Widely distributed in 

 North America. 



76. Colymbetes sculptilis Harris. 



Caribou Island, Square Island, Hopedale (Packard). White 

 Mountains, N. H., below and above the tree line. Lake Superior 

 (LeConte) ; Long Island. The common species in eastern United 

 States. 



77. Col3anbetes rugipennis Sharp. 



Red Bay, common. Described from northern boundary of Ne- 

 braska. Mr. Roberts considers this to be a good species. It occurs 

 also at Winnipeg. 



78. Colymbetes groenlandicus Aube. 



A lot from Nachvak. Ungava Bay (Turner: Schwarz list). 

 Regimbart (Bulletin Entomological Society of France, Vol. XVII, 

 1889) regards groenlandicus Aube (Greenland, Iceland, Labrador), 

 Drewseni Lee. (Greenland), Thomsoiii Sharp (Lapland, Iceland) as 

 varieties of dolobratus Payk., which Dr. Van Dyke took on the 

 Alaskan islands. 



79. Dytiscus dauricus Gebl. 



West St. Modest, Red Bay. Interior of Labrador (Low: 

 Fletcher list). I took this species at Hermit Lake, Mt. Washington, 

 N. H. (3,700 feet). Maine to Alaska; Kamtschatka; Dauria (Ham- 

 ilton). 



80. Dytiscus parvulus Mannh. 



One or two specimens from Nain and Hopedale Mr. Roberts 

 refers to this species, which was described from Alaska. 



81. Gyrinus minutus Fabr. 



82. Gyrinus affinis Aube. ? 



These two species are listed by Packard from Square Island. 



