1908 ENTOMOLOGICAL SOCIETY. 117 



taining carbolic acid, applied once a week after tlie plants appear above 

 ground, until they are ready for the table, have given about the best results. 



The Hessian Fly, Mayetiola destructor, Say., was present, in the district, 

 in destructive numbers in spring wheat. Plants were noticed to be infested 

 about the end of May, and in some places the attack was quite serious. On 

 the Central Experimental Farm, in fields where the soil was poor and where the 

 unfavourable weather conditions had weakened the plants, probably as many 

 as 50% were infested by the Hessian Fly. In other fields where the soil was 

 better, the plants were stronger and better able to withstand the unfavour- 

 able conditions of the season, and in these fields the loss from Hessian Fly 

 would amount to about 5%. From collected material, both sexes of the flies 

 emerged in the Division on June 20th, 22nd and 23rd. 



For some years we have noticed at Ottawa, that the young leaves of 

 spinach were fastened together at the tips of the shoots by a small lepidop- 

 terous larva. This year we made some observations on the insect and were 

 successful in rearing the moths, specimens emerging on July 18th. It '!s 

 one of the micros and we hope soon to have its determinJition. During the 

 present year the insect was particularly abundant, and in my own garden, 

 and one or two others which I visited, it practically rendered every plant 

 unfit for use. 



Sparganothis jlavihascma, Fern. This interesting and rare tortrix was 

 again destructive to the Caprifolium group of Loniceras in the Arboretum 

 and Botanic Garden of the Central Experimental Farm. The larvse were 

 quite numerous on some of the bushes. In 1907, however, they were "n 

 much greater numbers and did very noticeable damage. The caterpillar 

 draws together the upper pair of leaves, fastening the same along the edges, 

 so that the newly formed berries and itself are within this tent-like structure. 

 Their presence on a bush is thus easily detected. The injury is done chiefly 

 to the cluster of young berries, or immature fruit, which is eaten, and 

 among which the caterpillar makes a web of whitish silk. In 1907, the larvse 

 were plentiful on June 19th, and many specimens were collected by Mr. 

 Kearfott and me, from which moths were reared on July 2nd to July 6th. 

 This year larvae were collected on June 6th, from which we got moths on 

 June 27, 29, 30 and July 9. Pupae were also found where the larvae had 

 been feeding. When mature the caterpillar is 15 mm. long when at rest, 

 17 mm. long when extended. It is cylindrical in shape, bright apple green 

 in colour, and the segments are wrinkled. Dorsal vessel distinct. No mark- 

 ings on the skin. The head is black and shining. The thoracic shield is 

 black, margined in front with white. Tubercles on body are inconspicuous, 

 each bearing a single pale, slender, hair. The feet are all concolorous 

 with the body. 



Eriophyes species. The small pocket galls of the genus Eriophyes were 

 very noticeable during the past season. The foliage of elm, basswood, maple 

 and wild cherry were particularly disfigured by the work of these mites. 

 Basswood trees were examined on June 12th and were found to be heavily 

 infested by Eriophyes ahnormis, Garm. Quite a few of the galls were on 

 the under side of the leaves. The leaves of the soft maples, at Ottawa, 

 have been much disfigured of late years by the galls of Eriophyes quadripes, 

 Shimer. 



At an excursion of the Ottawa Field-Naturalists' Club, held to the Mer 

 Bleue, and nearby vicinity, on June 20, some interesting material was col- 

 lected. The Mer Bleue is an extensive peat bog, about 12 miles from Ottawa, 

 and is one of the best hunting grounds which we have in the district. The 

 small, curious caterpillars of the plume moth, Pterovhorus eupatorii, Fern., 



