361 



Omorgus jMhorimaeae. Spraying has not proved successful, owing 

 to the manner of feeding of the larvae. The various preventive 

 measures have already been noticed [see this Review, Ser. A, v, p. 35, 

 & vi, p. 292]. 



Wilson (H.F.). Aphid Notes from British Columbia.— Pwc. B.C. 



Eniom. Soc, Victoria, B.C., no. 5, January 1915, pp. 82-85, 15 figs. 

 [Eeceived 17th June 1918.] 



The Aphids dealt with in this paper include : — Macrosiphum 

 stanleyi, sp. n., from the under-side of leaves of Samhucus glauca ; 

 M. frigidae, Oestl. , on Artemisia sp. ; M. rudbeckiae. Fitch, on Solidago 

 sp. ; M. urticae, Schr., on Urtica dioica ; M. ludovicianae, Oestl., on 

 Artemisia ludoviciana ; M. rosae, L., on Rosa sp. ; Nectarosiphum 

 rubicola, Oestl, on Ruhus sp. ; Myzus cerasi, F., on wuld cherry; 

 Aphis cerasifoliae. Fitch, on choke cherry ; A. sorbi, Kalt., on apple ; 

 A. avenae, F., on apple ; A. cardui, L., on Carduus sp. ; Hyalopterus 

 arundinis, F., on Prunus sp. ; Melanoxantherium smithiae, Monell, 

 on Popidus sp. ; Cladobius ? poptdneus, Kalt., and Ardaphis popnlifolii, 

 Essig, on Popidus sp. ; Chaitophorus aceris, L. , on Acer sp. ; C. negun- 

 dinis, Thomas, on Acer negnndo ; Euceraphis hetula. Fitch, on Eastern 

 birch ; and PkyUaphis fagi, L., on Fag us sp. (imported). 



Myzaphis (Aphis) abietina, Wlk., of w^hich a description is given, 

 was first noticed in 1914 on spruce trees in Vancouver, w^here its 

 presence caused the fall of practically all the previous year's needles. 

 Later in the season it migrated to an alternate host. 



Wilson (T.). The Oyster-shell Scale.— P/oc. B. C. Eniom. Soc, 

 Victoria, B.C., no. 5, Januarv 1915. pp. 96-97, 1 plate. [Received 

 17th June 1918.] 



Of the various scale-insects infesting orchards and forests, none has 

 so varied a list of host-plants, and few have so wide a geographical 

 range, as Lepidosaphes ulrni (oyster-shell scale). This paper gives a 

 list of its host-plants in British Columbia, including apple, pear, crab 

 apple, mountain ash, rose. Spiraea discolor, Prunus emarginata, 

 ha'VNi:horn, Amelanchier alnifolia, Japanese quince, Cornus nuttalliy 

 C. stolonifera, laburnum, willow, poplar, ash, beech, elm, privet, 

 lilac, box and Rhamnus purchiana. 



It has been found at all altitudes from sea-level up to 3,000 feet, 

 but fortunately it is exceedingly subject to parasitism and reproduces 

 slowly, hence it is naturally held in check. 



Caesar (L.). Insecticides and Fungicides. — Ontario Vegetable Growrrs^ 

 Assoc. 13th Ann. Rept., 1917; Toronto, 1918, pp. 29-32. 



This paper discusses the comparative values of various insecticides, 

 including Paris green, lead arsenate and calcium arsenate, sodium 

 arsenate and arsenite and tobacco extracts. 



Murphy (P. A.). Dusting v. Spraying in Nova Scotia. — Canadian 

 Horticulturist, Toronto, xli, no. 5, May 1918, pp. 113-114, 1 fig. 



Experience has shown that fruit from orchards that have been 

 dusted will be somewhat more free from the attacks of biting insects 



