52 The Ottawa Naturalist. [June 



Mr. Metcalfe showed Anisota rubicunda, a very beautiful 

 moth, also specimens of the injurious leaf-hopper, Typhlocyha 

 rosce. The insects known as leaf-hoppers occur on grasses and 

 trees and shrubs of all kinds, and many are decidedly destructive. 

 Mr. Gibson spoke of the injury caused last year in eastern 

 Ontario to potatoes, beans and other plants by the apple leaf- 

 hopper, Enipoasca malt. 



Mr. Baldwin exhibited specimens of Silvanus SMrinamensis 

 which had been found in Ottawa on bags of flour. This little 

 beetle is a well known enemy of stored grain, dried fruits, etc. 

 He also showed a small general collection of coleoptera, among 

 which was noticed a specimen of Pityobius anguinus which is 

 rare at Ottawa. 



Mr. Young brought to the meeting a box of micro-lepidoptera 

 beautifully mounted. Among these were co-types of recently 

 described new species, viz. : Crambus yotmgelhts, Crambus polingi, 

 Crambus nevadellus , and Thaumotopsis coloradella. 



Mr. Groh showed examples of the Greenhouse White Fly 

 (Aleyrodes) in the egg, larval and perfect states. He mentioned 

 that these insects were of considerable economic importance, and 

 outlined some experiments in destroying them by fumigation 

 with hydroc3^anic gas, which he had carried on while attending 

 the Ontario Agricultural College at Guelph. 



Mr. Halkett spoke of some dipterous larvse which he had 

 found in the Northwest feeding in the head of a bird. The flies 

 had been reared but as yet had not been identified. 



Mr. Gibson showed a collection of Sesiidae most of which had 

 recently been named by Mr. W. Beutenmuller, of the American 

 Museum of Natural History, New York. None of the species 

 were particularly rare, but the exhibit as a whole was interesting. 

 These moths resemble rather closely wasps or hornets. The 

 larvae are borers living in the stems, trunks, roots, or branches 

 of living trees. A fine pair each of Catocala coccinata, taken at 

 Winnipeg, Man., by Mr. J. B. Wallis, and Hepialus hyperboreus, 

 collected at Hymers, Ont., bv Mr. H. Dawson, were also shown. 



A. G. 



January 28th, 1909. Held at the residence of Mr. W. 

 Simpson. The members present were: Messrs. Harrington, 

 Halkett, Metcalfe, Groh, Eifrig Jr , Gibson, Baldwin, Young and 

 Simpson in the chair. Numerous specimens were exhibited by 

 the various members in turn, all of which called forth keen 

 discussion 



Mr. Harrington showed a number of flies of the curious 

 genus Microdon, and read portions of an article on them by 

 Wheeler in the Journal of the New York Entomological Society. 



