85 



maggot) has been recorded from British Columbia [see this Review, 

 Ser. A, V, p. 581]. Otiorrkj/nchus ovatus (strawberry root weevil) was 

 studied in Vancouver [see this Review, Ser. A, v, p. 469]. Larvae of 

 Folyphylla decemlineata. Say, and of Aristotelia sp. were also injurious 

 in strawberry plantations. 



Forest and shade-tree insects have been the subject of special 

 study [see this Review, Ser. A, v, pp. 550-551, 568]. It is intended to 

 undertake co-operative work with the forest plant pathologists, as it 

 is felt that in this way a more speedy solution may be found to several 

 obscure problems of tree injury. 



Investigation into the question of insects affecting stored grain 

 and other products disclosed the fact that serious losses do not occur 

 to stored grain owing to the rapid movement of the grain crop and the 

 extremely low temperatures prevailing in districts Avhere grain is stored 

 locally. The possibility of treating rice infested with Calandra oryzae 

 by means of high temperatures was investigated, and the results 

 indicated that rice would not withstand the high temperature necessary. 

 The value of superheating a ship's hold by steam in order to destroy 

 this weevil was successfully demonstrated. It is hoped that the practice 

 of controlling insects infesting mills, warehouses, etc., by high 

 temperatures will be more generally adopted, this method being 

 cheaper, safer and easier of application than fumigation. 



Keilin (D.). On the Supposed First Stage Larva of LeptoJiylemyia 

 coarctata, Fall. — Bull. Entom. Research, London, viii, no. 2, 

 December 1917, pp. 121-123, 2 figs. 



The conclusion arrived at by Kurdjumov that the eggs described by 

 him represent the overwintering stage of Leptohylemyia coarctata [see 

 this Review, Ser. A, ii, p. 350] is criticised by the author, who considers 

 that these eggs do not belong to the developmental cycle of this insect, 

 but were probably introduced into the breeding vessel with earth 

 from outside, this conclusion being based on the structure of the 

 mouth-parts, of the posterior end of the abdomen and of the posterior 

 spiracles of the primary larva described by Kurdjumov. 



Newstead (R.). Observations on Scale-Insects (Coccidae)-V. — BulL 

 Entom. Research, London, viii, no. 2, December 1917, pp. 125-134. 



This paper deals with a large number of Coccids including :^ 

 Iceryaaegyjjtiacum, Doug., from Zanzibar on date palm; Stictococcus 

 multispinosus, Newst., from the Gold Coast, on kola, a small 

 percentage of the females being attacked by Chalcidid parasites, 

 and from Uganda, on Markhamia platycalyx ; S. sjostedti, CklL, from 

 Gold Coast, on cacao ; Pseudococcus citri, Risso, from British East 

 Africa and Uganda, on coffee ; P. sacchari, Ckll., from Madras, on 

 rice, and from British Guiana, on sugar-cane ; P. virgatus, Ckll. , from 

 Uganda, on coffee, from Zanzibar, on cassava and sugar-cane, from the 

 Gold Coast, on French beans, Jatropa curcas and Colocasia, and from 

 Southern Nigeria, on cacao seedhngs ; Phenacoccus insolitus, Green^ 

 from Madras, on egg-plant ; Tachardia decorella, Mask., from Uganda, 



