310 Mr. A. G. Butler on some 
ington ;” itagrees with the form represented by Stretch (Zyg. 
and Bomb. pl. vii. fig. 20). 
SPILOSOMA, Steph. 
12. Spilosoma virginica. 
Bombyx virginica, Fabricius, Ent. Syst. Suppl. p. 487 (1798). 
No locality recorded. 
13. Spilosoma vestalis. 
Spilosoma vestalis, Packard, Proc. Ent. Soc. Phil. iii. p. 125 (1864). 
One female. Jacksonville, Oregon. 
HucHatES, Harris. 
14. Huchetes oregonensis. 
3. Euchetes oregonensis, Stretch, Zyg. & Bomb. p. 187. n. 2, pl. viii. 
fir. 7 (1871-73). 
Rouge River and Jacksonville, Oregon, May 7th to June 7th. 
HYPERCOMPA, Steph. 
15. Hypercompa virginalis. 
Chelonia virginalis, Boisduval, Lép. Calif. p. 49 (1852). 
Var. Epicallia virginalis, var. ochracea, Stretch, Zyg. & Bomb. p. 71, 
pl. iii. fig. 2 (1871-73). 
Cape Mendocena. 
Why Dr. Packard and others have placed this species in 
Epicallia, of which £. villica is type, it would indeed be 
hard to say; setting aside other differences, the utter dissimi- 
larity of the male antennze should have been sufficient to keep 
them widely separated. ‘The pattern and colour of the wings, 
the less woolly and smaller thorax, and the barred abdomen 
are all characteristic of Hypercompa; in fact, with the excep- 
tion of the rather shorter costal margin of the primaries, which 
may perhaps be regarded as a generic character, I can see 
nothing to distinguish it from that genus. 
ArcTIA, Schrank*. 
16. Arctia achaia. 
Arctia achaia, Grote, Trans. Am. Ent. Soc. vol. i. p. 334, pl. vi. figs. 45, 
46 (1868). 
* It may be well to note here that the A. antholea, Boisd., of California 
is evidently conspecific with A. docta, Walk., from Mexico, 
