Hydriomena renunciata Wlk. ( PI. I\', Figs. 10-14; PI. IX, Fig. 2). 



There is another species which occurs in the Eastern and New 

 England States along with pliiviaia and which has invariably been 

 confused with the same although they are easily separated by even a 

 superficial examination of the Uncus ; for this species we believe the 

 above name is applicable, judging by a colored figure of the type in the 

 British Museum which we have received. It is this species which 

 Packard figures in the Monograph on PI. VIII, Fig. 29; it is generally 

 rather larger than plH^iata with broader primaries and in general macu- 

 lation approaches closer to the European cocndata than does plniiata; 

 the ground color is rather dark, often quite blackish with an admix- 

 ture of green shades and the whitish median band is of more even 

 width throughout and often stands out very prominently from the 

 darker surrounding area. 



The Uncus is still more deeply bifurcate than that of cartilata 

 and the neck is consequently practically eliminated. 



The species has apparently the same range as plitviata; Dr. 

 McDunnough found it common, although somewhat worn, in the 

 White Mts., N. H. (Bretton Woods) in mid-July and we have series 

 before us from Northwestern Ontario (Hymers), Digby, N. S., \'er- 

 mont and the Catskills Mts. 



On the northern Pacific coast this species is represented by the 

 race columbiata Tayl. (PI. IV, Figs. 13, 14) which is rather larger 

 and slightly more variegated in appearance, but has the same type 

 of genitalia ; we have, besides the types, a long series from Vancouver 

 Is. and Ketchikan, Alaska. 



There is a considerable tendency toward melanism in the western 

 form, (PI. IV. Fig. 12) especially in those occurring inland; Mr. 

 Swett mentions this form under the name nigresccns Heune (C. Ent. 

 44, p. 228) from Saskatchewan but of course this name is not applic- 

 able; we propose therefore the name pernigr.\ta for the suffused 

 blackish form with only traces of a paler median area, our types being 

 1 (J , 2 9 from Glacier National Park, Montana ; we have made 

 Paratypes of 1 $ , \ 9 from Skagit Basin, B. C. and 1 5 from 

 Stickeen River, B. C, the two former in the Collection of the Amer- 

 ican Museum; two very similar specimens from the Sierra Nevadas, 

 Calif. (Hy. Edwards) are also in this collection. 



