THE CANADIAN ENTOMOLOGtst. 249 



Mr. Riley accepted the facts brought forth by Mr. Smith, and remarked 

 on the statement that the latter had found the ovaries more or less 

 developed in some individuals. He had no doubt but that the species 

 was normally single brooded at New Brunswick. This year the beetles 

 had appeared at New Brunswick two weeks later than last year, which 

 showed that the time of appearance varies greatly. One curious fact 

 brought forth was that the beetles appeared at the same time as at Wash- 

 ington. He remarked also on the fact that during the month of June at 

 New Brunswick there was no evidence of the development of larvae, which 

 was not the case at Washington. Life is quicker in the more northern 

 regions, and under such conditions acceleration might be expected which 

 was not the case with this species. There is a difference between the life 

 at New Brunswick and that at Washington, and somewhere between these 

 two places there must be a dividing line. Such cases of peculiar charac- 

 teristics may be explained by heredity. Acquired characters which are 

 beneficial have fixed themselves upon the species, and this, no doubt, 

 accounts for the single or double broodedness of this or any other species. 



Mr. Smith called attention to the fact that the observations recorded 

 in the present paper were made in 1889 and the present year, while the 

 observations of '90 and '91 were reported in the proceedings of the Club 

 last year. 



Mr. Southwick stated that in New York City spraying for this species 

 was begun about the last of May and that he thought the species was 

 there two, or perhaps three brooded, al. hough Mr. Beutenmeuller of the 

 American Museum has so far noticed but one brood. 



In reply to a question by Mr. Lintner, Mr. Riley stated that at Wash- 

 ington the greater part of the second brood of beetles hibernated, 

 although some doubtless laid eggs for a third generation. They disappear 

 in August at Washington at the same time the first brood disappears at 

 New Brunswick. 



Mr. Schwarz called attention to the fact that there was a vast difterence 

 between the climate of Washington and New Brunswick, which difterence 

 he had especially noticed in the coleopterous fauna of these two places. 

 An important investigation in this regard would be the behaviour of the 

 species in the latitude of Baltimore and Philadelphia. The first brood 

 did more damage at New Brunswick than did the same brood at Wash- 

 ington. In Washington it is the second brood that does the most 

 damage, this brood being much more numerous. 



