178 



of oak {QuercKS alba) have been completely defoliated, Rosaceous, 

 plants and grasses, as well as elm, beech, maple and hawthorn, were 

 also severely injured. 



Orgyia {Notolophus) antiqua (vapourer moth) will feed upon the 

 foliage of almost any kind of tree with no apparent difference in feeding 

 habits. Pupal parasites include Scambus inquisitonellus, D. T., and 

 S. indagatrix. Walsh ; the only larval parasite found was Cralotechus 

 orgyiae, Fitch. The Pentatomids, Podisus serieventris, Uhler, and 

 P. maculiventris, Uhler, are predaceous on the larvae. 



Hemerocampa leucostigma (white-marked tussock moth) is a general 

 feeder on the foliage of deciduous trees, and when present in large 

 numbers has been known to feed extensively on coniferous trees such 

 as spruce, fir and pine. Frequently after the 2nd or 3rd histar the 

 larvae cease to feed on foliage and attack young apples. Pupal 

 parasites were the same as those of 0. antiqua and also included 

 Tachina mella, Walk., and Rhogas intermedius, Cress. (?). 



McLaine (L. S.). The Introduction of the Parasites of the Brown-tail 

 and Gipsy Moths into Canada. — Proc. Entom. Soc. Nova Scotia for 

 1917. Truro, no. 3, Januarv 1918, pp. 74-76. 1 plate. [Received 

 11th' February 1919.] 



The introduction and history of the brown-tail moth [Nygmia 

 pJiaeorrhoea] and of the gipsy moth [Porthetria dispar] in the United 

 States are briefly reviewed. In consequence of the appearance of the 

 former in New Brunswick and Nova Scotia and of the close proximity 

 of the latter to the Canadian boundary, it was decided to introduce 

 insects that are parasitic upon these species and also, to ensure their 

 establishment, upon native insects. The parasites chosen were a 

 Braconid, Apanideslacteicolor, Vier., aTachinid, Comqjsilura concimiata, 

 Meig., and a predaceous beetle, Calosoma sycophanta,L. Tlie method 

 of colonisation and the action of these parasites on their hosts is 

 described, 



Sanders (G. E.) & Kelsall (A.). The Dropping of Apples caused by 

 Spraying with Lime-Sulphur. — Proc. Entom. Soc. Nova Scotia for 

 1917, Truro, no. 3, January 1918, pp. 77-84. [Received 11th 

 February 1919.] 



Complaints were received from apple-growers in the Annapohs 

 Valley during 1913 and 1914 that spraying with Ume-sulphur had 

 caused the apples to drop. A thorough investigation into thi s question 

 and many experiments, some of which are given in detail, have led 

 to the following conclusions. It is the hme-sulphur that is apphed 

 to the under -side of the leaf that causes the damage. The least injury 

 is caused by the early sprays, the damage increasing with each 

 successive apphcation. - Lime-sulphur of 1 '005 sp. gr. will do more 

 damage, when wrongly apphed, than that of 1 01 sp. gr. properly apphed. 

 Some varieties of apple are more easily injured than others. The 

 amount of sunhght, which affects the chlorophyll content of the leaves, 

 determines to a great extent the amount of hme-sulphur injury. Upon 

 the humidity of" the atmosphere depends the rapidity with which the 

 solution dries on the trees, and the longer the spray is on the leaves, 

 the greater is the injury. A heavily loaded tree will not stand as 



