1911 ENTOMOLOGICAL SOCIETY. 73 



{Betula papyrifera), Yellow Birch (Betula lutea), Cottonwood {Populus deltoides), 

 White Oak (Quercus alba), White Pine (Pinus strobus). It is undoubtedly a very 

 destructive scale. 



1252. Aspidiotus ostrceformis (Curt.). The Curtis Scale is much more widely 

 distributed throughout Ontario than has been hitherto supposed but, in spite of its 

 prevalence, it does not seem to be very destructive. It has been found at Colling- 

 wood in Western Ontario and as far east as Trenton in Eastern Ontario. It has 

 also been reported from Chilliwack, Britisli Columbia, and from several places in 

 Prince Edward Island. 



1256. Aspidiotus perniciosus (Comst.). Wherever it occurs the San Jose Scale 

 is considered, and rightly so, the most destructive insect in the Dominion that fruit- 

 growers have to combat. Almost every kind of fruit trees and bush fruits are liable 

 to be attacked by the scale. Many shade trees are also attacked. It has become 

 established in the following counties : Peel, Halton, Wentworth, Welland, Lincoln, 

 Haldimand, Norfolk, Elgin, Kent and Essex. 



1270. Aspidiotus ulmi (Johnson), The Elm Aspidiotus has been found by 

 the writer in several localities in Western Ontario. It is most abundant at Guelph 

 on the Soft Elm (Ulmus americana). 



1294. Chrysomphalus aonidum (Linn.). This Coccid occurs in conservatories 

 on Ficus elastica, at Guelph, Ontario. 



1295. Chrysomphalus aurantii (Mask.). This species has been found on fruit 

 imported from California. 



1300. Chrysomphalus dictyospermi (Morg.). This Coccid has been found on 

 Cinnamon in a conservatory at Ottawa. 



1305. Chrysomphalus ohscurus (Comst.). This species has been found in 

 Ontario, but my notes on habitat and host plant have been lost. 



1330. Targionia dearnessi (Ckll.). This interesting species was found by Mr. 

 John Dearness, on Bearberry (Arcostaphylos uva-ursi) in the Bruce Peninsula 

 Ontario, 



1377. Lepidosaphes hecMi (Newm.). This species only occurs on imported 

 fruit, oranges, etc., from the South. 



1431, Lepidosaphes ulmi (Linn.), The Oyster-shell Scale is generally dis- 

 tributed over Ontario, Quebec, British Columbia, Nova Scotia, and Prince Edward 

 Island. It is one of the most injurious scales found in Canada. It is found on a 

 host of plants, some of which are Apple, Pear, Plum, Cherry, Mountain Ash, Haw- 

 thorn, Eed-osier Dogwood, Black and White Ash, Aspen, Prickly Ash, Mulberry 

 and Horse Chestnut. 



1422. Inchinaspis longirostris (Sign.). A palm (Kentia sp.) was badly in- 

 fested at the Fruit, Flower and Honey Show, Toronto, 1908. 



1442, Parlatoria pergandei, var. thece (Comst.). This species was found on 

 Lemon plants in the Ontario Agricultural College greenhouse at Guelph. 



Undetermined Species of Pseudococcus. Specimens have been found on a host 

 of plants, roots, stems, and leaves, but the species have not yet been determined. 



Enemies of the Coccid^. 



There are upwards of seventy species of Scale Insects found in the Dominion 

 of Canada at the present time, and these are held in check very largely by other 

 forms of predaceous or parasitic plants or animals which by feeding upon them 

 prevent them from increasing to such an extent as to be uncontrollable. As trans- 

 portation has developed and commerce and international trade have taken place 



8 S.B. 



