516 



The Commission never had an opportunity of ascertaining that any 

 of these parasites and hyperparasites had attained the same diffusion 

 as P. berlesei, but recognises that some of them are useful auxiliaries. 

 It was not possible to ascertain whether epidemic infection of the kind 

 suggested by Grassi [see this Review, Ser. A, iv, p. 200] was responsible 

 for some deaths which were neither natural nor due to parasitation by 

 P. berlesei. 



Gibson (A.). Reports on Insects of the Year ; Division no. i, Ottawa 

 District.— 467/i Ann. Repf. Entom. Soc. Ontario, 1915, Toronto, 

 1916, pp. 11-14, 1 fig. [Received 10th October 1916.] 



The followdng insects were recorded as attacking field crops : — 

 Melanoplus atlantis (lesser migratory locust) and Camnula jjellucida 

 on oats, barley, timothy, clover, etc. ; Eiixoa tessellata (striped cut- 

 worm) on beets, carrots and onions ; E. messoria (dark-sided cutworm) 

 and E. ochrogaster (red-backed cutworm) on various vegetables ; 

 Chortojjhila {Phorhia) brassicae (cabbage maggot) on cauliflower, 

 cabbage, turnips and radish ; Hylemyia antiqua (imported onion 

 maggot) ; Chortophila fusciceps (seed-corn maggot) on beans ; Crioceris 

 asparagi, L., and C. V2-punctata, L. (asparagus beetles) on asparagus ; 

 Macrobasis unicolor, Kirby (ash-grey blister beetle) on potato, beans, 

 peas, beets, etc. ; Systena frontalis (red-headed flea-beetle) on potato, 

 aster, chrysanthemums ; Acyrthosiphon (Macrosiphum) pisi (pea 

 aphis) ; Psila rosae (carrot rust fly). 



Fruit trees were attacked by Lepidosaphes ulmi, L. (oyster-shell 

 scale), Cydia pomonella (codling moth), and Taxonus {Ametastegia) 

 glabratus. Fall, (dock sawfly) on apples. 



Greenhouse and garden plants were also injured by Poecilocapsus 

 lineatus, F. (four-lined leaf bug) on aster, dahlia, etc., and Diarthro- 

 nomyia hypogaea, Lw. (chrysanthemum midge). 



CosENs (A.). Reports on Insects of the Year ; Division no. 3, Toronto 

 District — 46th Ann. Rept. Entom. Soc. Ontario, 1915, Toronto, 

 1916, pp. 14-16. [Received 10th October 1916.] 



The following injurious insects were reported : — Tent caterpillars 

 [Malacosoma] on choke cherry and other native trees and on culti- 

 vated fruits ; Psila rosae (carrot rust fly) on carrots ; Trichiocajnpus 

 viminalis. Fall., on California poplar ; Recurvaria nanella (lesser bud- 

 moth) on pear and apple ; several species of Aphids on roses, spiraea, 

 nasturtium, etc. ; Dasyneura torontoensis. Felt, a new species causing 

 root galls on Maianthemum canadense, F. (false Solomon's seal) and 

 grasshoppers including Melanoplus femur-rubrum. The last-named 

 was parasitised by Nematodes belonging to the genera Gordius or 

 Merjyiis. 



Morris (F. J. A.). Reports on Insects of the Year; Division no. 5, 

 Port Hope District.— 4677i ^4*; n. Rept. Entom. Soc. Ontario, 1915, 

 Toronto, 1916, pp. 17-21. [Received 10th October 1916.] 



Insect pests recorded include : — Tent caterpillars [Malacosoma] ; 

 LepidosajjJies ulmi (oyster-shell scale) on Avild and cultivated apples ; 

 Eriocampoides limacina {Selandria cerdsi) (pear slug) on cherry ; 



