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brown in colour with the thorax and wing-cases margined with black along the 

 outer edge. The latest date on which the writer has founil the adults feeding is 

 September 15th, (on oak). 



Spinach Flea-beetle : a, adult beetle ; 6, egg mass ; 

 bb, sculpture of egg ; c, full grown grup ; d, pupa ; 

 e, nejvly hatched grub ; y, abdominal segment of 

 same : a, c, d, five times natural size ; b, e, more 

 enlarged ; :bb,f, still more enlarged. (After Chit- 

 tenden, Bull. 19, N.S., Div. of lS;nt., U.S. Dept. Agr) 



In addition to the five species which I have mentioned, there are two others 

 which some seasons are fairly numerous in some sections of Quebec province. 

 These are the Spinach Flea-beetle, Disonycha xanthomelacna Dalm., which in the 

 United States feeds chiefly upon spinach or beets. Little injury is done by this 



Horse Radish Klea beetle, 

 enlarged 9 times. (After 

 Chittenden, Insect Life, 

 Vol. VII.) 



insect to cultivated crops in Canada. The other S'pecies is the Horse Radish 

 Flea-beetle, Phyllotreta armoraciac Koch., which has been reported from INIont- 

 real. The only cultivated crop attacked is the horse radish. At Ottawa I have 

 found the beetle on garden radish. 



