March .S94.] NeUMQ:GEN (!v: DvaR. N. A. BoMBVCES. 5 



Genus Arctia Schrauk. 



1802 — Arctia ScHRANK, Fauna Boica, Vol. II (2), p. 151. 

 l^22--Epica/Iia HiU'.NER, Verz. bek. Schiiiett., p. 182. 



A. virginalis Boisduval. 



\i^i — Aiclia virj^inalis BoiSDUVAL, Ann. Soc. Ent. Fi. (2), Vol. X, p. 321. 

 var. guttata Boisduval. 



1852 — Hdisduval, Anil. Soc. Ent. Fr. (2), Vol. X, p. 321. 

 var. ochracea Stretch. 



1S72 — Stretch, Zyg. and Bomb. N. A., Vol. I, p. 71. 

 Thorax and primaries black. Head, a spot on back of thorax, 

 abdomen and secondaries orange ochraceous. Dorsal transverse 

 bands on abdomen, and two bands with discal and marginal spots 

 on secondaries black On fore wings, five bands of large well 

 rounded spots, the outer band waved. A yellow spot on patagia. 

 In the var. guttata the secondaries are nearly entirely black. 

 Expanse, 50 — 60 mm. 



Habitat, California and the Pacific Northwest to the Rocky 

 Mountains, 



Genus Eyprepia Ochscuhciiucr, 



iSio — Eyprepia, Ochsknhkimer, Schmett. Eur., Vol. Ill, p. 299. 

 1855 — Apantens^ wjViVM., Cat. Brit. Mas., pt. Ill, p. 331. 

 1864 — Callarctia Packard, Proc. Ent. Soc. Phil., Vol. Ill, p. 114. 

 1866 — Cyinbalopkora Rambijk, Cat. Lep And., Vol. II, p. 231. 

 iS86 — Orodeiiinias Wallkngren, Skand. Meter., Vol. II, p. 315. 



Syuopsis of groups. * 



Veins of primaries pale lined, linings rarely obsolete in one species. 

 Size medium to large, vestiture of wings opaque. 



Terminal W-iiiark present, the fourth transverse line either 



straight or but slightly angulated . . . Callarctia. 



Terminal X-mark, formed of the terminal W and the strongly 



angulated fourth line Mimarctia. 



Size small, vestiture subdiaphanous ; lines somewhat confused. Orodemnias. 

 Veins not lined. 



Terminal W-mark ....... Cymbalophora. 



Terminal X-niark ........ Apantesis. 



* The normal thora.x, in this genus, is yellowish with two black stripes on 

 collar and three on thorax. We have indicated the bands on the fore wings as 

 follows: — band I, sub-basal half band, resting on costa ; band 2, transverse 

 anterior band ; band j, median band ; band 4, transverse posterior band, imme- 

 diately adjoining band 5, the angular terminal or W-mark. A longitudinal band 

 along submedian fold, joining the angular terminal and forming with it a furcation 

 above internal angle. 



