ARCTIA. 337 



crossed by irregular anastomosing yellowish-white lines. Seconda- 

 ries bright ochre-yellow, with a large reniform central black spot, 

 two round black spots behind, a third smaller spot near the anal 

 angle, and a black dot between the middle and inner margin. 

 Abdomen tawny, with four blackish dorsal spots. Legs dusky ; 

 thighs and anterior tibiae fringed with red hairs ; hindmost tarsi 

 whitish, annulated with black. 



Lake Superior. 



HARRIS. 



2. A. parthenos Harris. Figured in Agassiz' Lake Superior, pi. 7. 



Head brown, with a crimson fringe above and between the black 

 antennas. Thorax brown above, margined before with an arcuated 

 cream-colored band, which is continued on each side of the outer 

 edge of the shoulder covers ; upper edge of the collar crimson red. 

 Primaries dusky brown, with three small cream-colored spots on 

 the outer edge ; four spots of the same color in a line near the 

 inner margin, and several more scattered on the disk. Secondaries 

 deep ochre-yellow, with the base, the basal edge of the inner mar- 

 gin, a triangular spot in the middle, adjoining the basal spot and 

 a broad indented band behind, black. Abdomen dusky above, 

 tawny at the tip and beneath. Legs dusky, thighs and tibiae 

 fringed with crimson hairs. 



Lake Superior. 



HARRIS. 



3. A. placentia Abbot. Figured in Sm. Abb. pi. 65. 



Fuscous ; primaries with one or three pale testaceous spots ; 

 secondaries reddish, margin and some submarginal spots fuscous ; 

 abdomen above reddish, with the dorsal spots and apex fuscous. 



Var. a. Fore wings with the outer fringe partly pale testaceous ; 

 and with several spots and dots of the same color in the disk. 



Var. b. Fore wings with the outer fringe wholly blackish-brown, 

 unspotted, except two very miuute testaceous dots. 



North America. 



4. A. virginalis Boisd. Ann. Soc. Ent. 2me ser. X, 321. 



Upper side black, with about twenty yellow spots on the prima- 

 ries. Secondaries fulvous, with three bands and the principal 

 nerves black ; the band of the extremity incomplete, ending before 

 reaching the anal angle ; sometimes all the bands are united by 

 22 



