THE ENTOMOLOGIST. 



Vol. X.] 



SEPTEMBER, 1877. 



[No. 172. 



THE COLO i; A DO BEETLK 

 By K. A, Ormekoi). 



DORYOPHOKA DECEMLINEATA (COLORADO BEETLE >. 



The Colorado beetle is come. Slowly, but steadily, it 

 accomplished its journey of fifteen hundred miles in about 

 eighteen years. From Nebraska and Iowa it came on till, 

 in 1865, it was in Missouri, and had crossed the Mississippi; 

 passing through Indiana and Ohio, in 1870, it reached the 

 borders of Canada and New York; and in 1871, floating 

 along Lake Erie on sticks or leaves, it established itself in 

 the neighbourhood of Niagara. Last year it was reported in 

 such vast numbers on the eastern coast of America as to 

 poison the air by the quantities in which it was thrown up on 

 the shore in Connecticut; it was noticed on vessels out at 

 sea; and in the autumn a specimen of the allied species (the 

 Doryophora juncla, of the Confederate States) was found in 



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