14 e Canadian Arctic Expedition, 1913-18 



Family CARABIDAE. 

 By H. C. Fall. 



Of the Carabidae collected by the Canadian Arctic Expedition, a repre- 

 sentative lot of 206 specimens has been sent me for identification by Dr. C. Gordon 

 Hewitt, Dominion Entomologist. The number of species in the lot is not 

 large — about fifteen — but of some of them considerable series were evidently 

 taken, only a part of which were submitted. 



The chief difficulty encountered in determining any collection of Arctic 

 Carabidae, centers in that complex of small Pterostichi belonging to the subgenus 

 Cryobius, which constitute so characteristic a feature of the Carabid fauna 

 of those regions. The species are numerous, but are still very imperfectly 

 known and to a great extent opinionative, and are not satisfactorily determined 

 in any American collection. Their identification therefore in the following 

 list must for the present be regarded as tentative. 



Genus Carabus Linn. 



Carabus chamissonis Fisch. 



Langton bay (Franklin bay), Northwest Territories, summer, 1911, R. M. 

 Anderson, collector, 19 ; cape Barrow, Coronation gulf, Northwest Territories, 

 August 4, 1915, J. J. O'Neill, collector, 1<?, I9. 



Genus Elaphrus Fab. 



Elaphrus riparius var. gratiosus Mann. 



Teller, Alaska; July 31, 1913, F. Johansen, collector, two examples in 

 badly damaged condition. 



Genus Nebria Lat. 



A single female of this genus was collected which cannot well be referred 

 to any species thus far recorded from the American continent. It seems in 

 most respects nearest to obliqua and suturaUs, but, unlike them, has elytral 

 interspaces 3.5.7. punctuate. It bears the label— Collinson point, Alaska, 

 May 9, 1914, D. Jenness, collector. 1 



Genus Pelophila. 



Pelophila eschscholtzii Mann. 



Teller, Alaska, July 29, 1913, F. Johansen, collector. A single specimen 

 in poor condition. 



x This specimen was submitted to Dr. E. C. Van Dyke for examination and he believes that it is a 

 black-legged variety oibifaria, the typical forms with red legs being found in the Lower Yukon Valley. 



