258 



female) thai I sec no sufficient grounds for separating them. The males from 

 Maine differfrom a single male from Germany in having the four lines more 

 slightly marked than in the latter; (he German example is slightly larger than 

 must of thi' Maine ex imples, hut one or two arc of I he some size. My three 

 Maine females only differ from the European one in being a little smaller. 

 It varies very slightly, the males (all taken in Maine) usually having no lines; 

 sometimes there is a very obscure common line on the under side el' (he 

 wings, and an obscure basal line on the hind wings. 



Larva. — Treitschke describes the caterpillar as feeding on the bilberry; 

 and being of a reddish lint, with white stripes on the hack, and a yellow 

 stripe on the sides (Newman). 



Thamnonoma akgillackakia. Packard. Plate 9, fig. (14. 



Tephrirta argillaccaria Pack., Sixth Rep. Pcab. Acad. Sc, 48, 1874. 



• 30 <$ and G 9. — This pretty modest species is of a uniform argillaceous 

 hue, sometimes with an olive-greenish tinge, with no lines, ]>ut two large 

 costal blackish spots on the outer half of the wing; a large, round, faint, discal 

 spot on both wings, slightly darker than the rest of the wing, and usually not 

 present in specimens at all rubbed, 1 ne head is slightly ochreous, and there 

 are ochreous points on the edge of the costa. Beneath as above, hut mottled 

 with ochreous, and especially on the costa of the fore wings and on the entire 

 surface of the hind wings. Legs and fringe concolorous with the body. 



Length of body, &, 0.48, 9, 045; of fore wing, S , 0.60, 9, 0.50; 

 expanse of wings, 1.20 inches. 



Brunswick, Me. June 25 to July. 10 (Packard) ; Massachusetts (Grote) ; 

 Philadelphia, Pa. (Amer. Ent. Soc); London, Canada (W. Saunders. Mus. 

 Comp. Zool.) ; Andover, Mass., Augusl (Sanborn); Natick, Mass., duly 24 

 (Stratton); Carver, Mass., July 10, July 28, August 1 (Shurtleff, Bost. Soc. 

 Nat. Hist.). It is very abundant in pine-woods in Maine on a dry soil, rising 

 and fluttering with rather a feeble flight and soon settling again. In July, 

 1874, 1 captured thirty males before securing a female*; the latter are appa- 

 rently less ready to fly. 



In an abnormal specimen from Jamaica Plain (Morrison), the two fore 

 wings are of the same size, hid the right hind wing is half the size of its 

 fellow; the discal spot and veins present, but the latter nearly one-half 

 shorter, more bent, and the interspaces wider. 



