THE CANADIAN ENTOMOLOGIST. 309 



Fifth stage. — Head concealed beneath the hair of joint 2, pale bro>vn- 

 ish ; width, 2.2 mm. Dorsal space whitish-gray, dorsal line white? 

 narrow \ lateral space dark greenish-gray, pale at the extremities ; sub- 

 ventral space greenish with sordid white subventral line. Warts large, 

 pale, the hair granules black, row iv. slightly orange, distinctly so 

 anteriorly and posteriorly, especially on joint 12. Hair long, bristly but 

 fine, abundant, black and white. 



Sixth stage. — Head partly retracted below joint 2, its suture well- 

 marked ; orange-ochraceous, labrum and bases of antennae yellow; 

 width, 3 mm. Body gray, punctured and wrinkled with intermixed 

 mottlings of fine white streaks and minute black dots. A poOrly defined 

 white dorsal line containing minute black dots ; subdorsal line obsolete, 

 but its location marks a boundary, where the colour becomes darker 

 gray laterally. Warts i.-iii., pearly gray, like the body, wart iv., 

 orange. A bright yellow, broad substigmatal line ; wart v., slightly 

 orange ; vi., whitish with yellow bases. Thoracic feet coloured like the 

 head, abdominal ones slightly orange-tinted. Hair dense, of quite even 

 length, pointed, bristly, heavily spinulated, black and white about evenly 

 mixed, though there is considerable variation in this respect in different 

 larvte, some having the hair nearly all black. From the thoracic seg- 

 ments and joints 12-13, 3. itvf white hairs of great length (15-17 mm.). 

 General appearance neat, silvery-gray. When fall fed, the larvai spun 

 slight cocoons and hybernated in them. Changed to pupae the following 

 spring, and the moths emerged in June. 



SHALL WE USE THE NAME EUDRYAS? 



BV A. R. GROTE, A. M., BREMEN, GERMANY. 



So far as I have present references Berg is the first to use again the 

 term Euthisanotia for Eudryas unio and allies in his paper on Argentine 

 moths. Berg's species is, however, as I have shown, not congeneric with 

 unio, but belongs to my genus Copidryas. More recently Neumoegen & 

 Dyar use Euthisanotia and cite Boisduval's Etidryas as a synonym. The 

 facts appear to be these. Hiibner, in his Zutraege, 3rd Hundred (N. & 

 D. call it "Vol. IH."), p. 12, No. 216, fig. 431-2, describes and illus- 

 trates Euthisanotia unio for the first time. He calls it a Noctua. In the 



