421 



iog of the poison over the leaf aud apparently rendering the poison 

 more tenacious. As against the W00II3' Aphis he believes that the best 

 solutions are the resin washes. Whale-oil soap in solution and carbo- 

 lated whale-oil soap maybe added, one-half pound true carbolated soap 

 to one-half pailful of soap thinned with a strong solution of washing 

 soda. As against the Peach-borer he recommends wrapping young 

 trees with newspaper from the crotch to 2 or 3 inches below the collar. 

 He also states that washing the trunks with the carbolated whale-oil 

 soap alone and with the resin washes would cause almost entire exemp- 

 tion from borers. 



OYIPOSITION OF DECTES SPIISOSUS. 



In the March number of the American Naturalist (vol. xxv, p. 294) 

 Dr. C. M. Weed presents a short note on the oviposition of this Ceram- 

 bycid beetle in the stem of the horse-weed {Ambrosia trifida), which is 

 substantially as follows : 



A single female was seen standing head downward on the stem, the 

 outer libers of which she had gnawed away and after three trials was 

 observed to insert her ovipositor and deposit an e^gg, after which she 

 withdrew to the top of the plant. The e,gg was deposited obliquely in 

 the pith about two-thirds of the way from the bottom to the top and on 

 the opposite side of the stalk from which the beetle stood. The ^gg^ a 

 figure of which is given, is described as elongate-oval, slightly curved, 

 of a pale yellow color and 2 millimeters long by 0.3 millimeter wide. 



EElJilDIES FOE I HE YELLOW SCALE. 



The Yuba County (California) horticultural commission, in their fifth 

 bulletin recommend the resin wash for Aspidiotus citrinus. They also 

 recommend washing freely with cold water in the evening or early morn- 

 ing during the months of July, August, and September, with a view of 

 washing oft' and destroying the joung insects which are then crawling 

 about over the tree. Fruit growers are discouraged from relying upon 

 the little parasite of this scale, as the original tree upon which this 

 insect was discovered in March, 1887, is still very badly infested with 

 scales. 



THE FLOUR :nOTH IN CANADA. 



The provincial board of health of Ontario has published recently an 

 appendix to Bulletin Xo. 1, which we mentioned in our article upon the 

 Mediterranean Flour Moth upon page 166, vol. 11, of Insect Life. 

 The pamphlet is issued for the benefit of millers and produce men. It 

 seems that no answers were received to the board's request for infor- 

 mation of the appearance of the moth, and that an inspection of the 

 principal mills and supply houses in Toronto was therefore made, with 

 the result that the pest was found in several of the large establish- 

 27707— Xo. 9 5 



