258 



female) llial I sco no snffici>'nl gidiiiids lor separating lliem. Tlie males from 

 Maine diirer from a single male from Germany in having the (our lines more 

 sliirjiflv marlsed tlian in llie laller; iheCTerman example is slightly larger than 

 most (if the ]\Iaine ex miph's, hnt one or two are of t he same siz(\ ]\Iy three 

 ]\Iaine females only di Her fioni the l']nro|iean one in iieiiig a little smaller. 

 It varies verv slightly, the males (all taken in ]\Iaine) nsiially having no liii(>s; 

 sonu'times there is a ver\' obsenre common line on the nnder side ot the 

 wings, and an obsenre iiasal line on the hind wings. 



Laird. — Treilsehke describes the cater|)illar as feeding on fin; bilberry; 

 and being of a reddish tint, with white stripes on ihe back, and a yellow 

 stripe on the sides (Newman). 



Thamnonoma AK(iiT-LACi:AKiA Packard. Plat (3 9, fig. G4. 



TrpJiriiia aryilhimiiiu Pafk., Sixth lirp. rculi. Acad. Sc, 4b, 1874. 



30 <f and 6 9. — This pretty modest species is of a nniform argillaceous 

 hue, somelimes with an olive-gi'eenish tinge, with no lines, imt two lai'ge 

 ci~.slal Idaekish spots on the outer half of the wing; a large, round, lliint, discal 

 spot on both wings, slightl}' darker Ihan the rest of the wing, and usually not 

 picsent in sp<'einiens at all rubbed. The head is slightly o(direons, and there 

 are ochreous [ioints on the edge ol the costa. llenealh as above, but mottled 

 with ochreous, and es|)(^ciall} on the costa ol the fore wings and on the entire 

 surface of the hind wings. Legs and friuiic concoloroiis wilh tlu' body. 



Length of l)o(ly, <? , ().4S, 9, 45; of liire wing, S, O.W, 9, 0.50; 

 expanse of wings, \.'2i) imdies. 



Brunswick, ^le. June 2") to , Tidy 10 (Packard): ^Tassachusetts (Grote); 

 Philadelphia, Pa. (Amer. Lnf. Soc); London, ( 'aiiada (W. Saunders. Mus. 

 Comp. Zool.); Andover, JLiss., August (Sanl)orn); Xatiek, Mass., .Inly 24 

 (Stratton); Carver, IMass., July 10, July 28, August 1 (Shurtletr, Bost. Soc. 

 Nat. Hist.). It is very abundant in piiU'-woods in Maine on a di'y soil, rising 

 and llnlteiing with rather a ti'eble flight and .soon settling again. In July, 

 1874, 1 eaptnicd thirty males betinc securing a female; the latter are appa- 

 rently less ready to lly. 



In an abnornud specimen from Januiica Plain (Morrison), Ihe two fore 

 wings are of the sanu- size, l)ut the riyht land wiuii is half the size of its 

 I'ellow; the discal spot and veins present, l)ut the latter nearly one-half 

 shorter, more bent, and the interspaces wider. 



