1908] SXOW-WHITE EUGOXIA 117 



together, but in the course of the careful search to which we 

 subjected this old grass, Mr. Brown found a nest of the Wren 

 which I think is worthy of description. When one locates a 

 pair of Short-bills he immediately begins to find nests in the 

 tall waving grasses, covered on the outside with green grass. 

 These nests are, in my experience, invariably empty, but now 

 it appears that nearby there is probably a different nest with 

 eggs. The one found by Mr. Brown was set low down so that it 

 was verv inconspicuous and instead of being built of green 

 grasses, as are the false nests, it was constructed of last year's 

 growth in the same manner as that of the Long-bill. 



In this nest were the remains of a set of five eggs, two 

 badlv broken and three which made moderately good cabinet 

 specimens. The nest had been deserted for probably a week or two. 



A REMARKABLE VISITATION OF THE SNOW-WHITE 

 EUGONIA, EXNOMOS SUBSIGNARIUS, HBN. 



By Arthur Gibson, Central Experimental Farm, Ottawa. 



On the evening of July 23rd, last, Ottawa was visited by 

 enormous numbers of the Snow-white Eugonia, the caterpillars 

 of Vv'hich are known as the Elm Span worm. Thousands of the 

 moths appeared in all parts of the city, being attracted to the 

 arc lights. Around many of these electric lights hundreds of 

 specimens were flying and resting on any available place. Some 

 of the electric light poles were literally covered with them, and 

 from a short distance the poles looked as if they had been 

 whitewashed or given a coat of white paint. On the main streets, 

 such as Sparks and Bank, the moths were much noticed and 

 caused considerable comment. Stores which had their doors 

 opened were invaded by the insects, much to the annoyance and 

 discomfort of the people inside. The many brilliant lights at 

 Britannia also attracted great numbers of the moths. 



The Snow-white Eugonia, 

 although a common insect and 

 widespread in distribution, has 

 not, as far as we know, ever 

 been noticed in such numbers, 

 in Canada, as it was on the 

 above evening. The following 

 evening, July 24th, a few speci- 

 mens were seen fluttering a- 

 bout, such as might be noticed 

 (luring any season when the in- 

 sect is in its normal numbers. 



SXOW-WHITE eugonia. 



