93 



(Burgess); Racine, Wis. (Hoy); Missouri (Riley); Idaho Springs, Colo., July 

 5, several Hying among alders, 7,330 feet elevation (Packard, Hayden's Sur- 

 vey); "Saint Martin's Falls, Albany River, Hudson's Bay; New York; East 

 Florida'' (Walker). 



This not very rare moth may be recognized by the rather oblong fore 

 wings compared with the other species, while the apex is more rectangular, 

 and the pale-gray fore wings tinged between the bands with greenish, but 

 never with reddish. It is a more boreal and subarctic species than any of 

 the others, and is the only one yet found in the New England States, where 

 it is not uncommon. Though at first inclined to regard Gruenee's pluviata as 

 distinct from the European, yet, on careful comparison with specimens 

 apparently from Austria, received from the Vienna Museum, all the speci- 

 mens I have differ only in the more decided black lines, especially the extra- 

 discal, while the submarginal smoky band is nearer the outer edge; but the 

 style and position of the markings are the same, and the markings on the 

 under side of the wings are identical. It varies much in the distinctness 

 and width of the lines and bauds, especially the width of the median light 

 band, and the size of the two-toothed projection it makes in the first median 

 space. In the European and some New England specimens, this projection 

 is but slightly marked. 



The Colorado specimens are grayish ash, and do not differ from eastern 

 examples. Length of fore wing, $ , 0.66 inch. 



The Labrador specimen, which is a good deal rubbed, does not differ in 

 size and appearance from White Mountain specimens; the latter scarcely 

 differ from the Illinois and Missouri examples, which are perhaps more dis- 

 tinctly greenish. Our specimens are all, with one exception, smaller than 

 the European, which expand 1.30 inches ; a fact noticeable in nearly all the 

 other species common to the two hemispheres. 



In this country — i. e., the New England States, the White Mountains, 

 and Labrador — the moths fly in June and July (Labrador and White Mount- 

 ains in July). I have no record of any being found in August. Guenee 

 says that this species occurs in Boreal Europe, the Alps, Pyrenees, and in the 

 mountain-plains in May, and again in July and August; thus indicating two 

 broods. Staudinger records it from Central and Southern Europe (not Ice- 

 land), Central and Southern Italy, the Ural Mountains, and Eastern Siberia. 

 Newman records it as occurring, though by no means commonly, in England, 



