218 BULLETIN 44, UNITED STATES NATIONAL MUSEUM. 



O. bicolorago Gii.* 



1852. Gn., Spec. Gen., Noct., i, 397, Xanihia. 



1874. Grt., Bull. Buff. Soe. Nat. Sci. ii, 124, \i\r. frnuf/inoidca. 



1875. Morr., Proc. Ac. Nat. Sci., 1875, 6G,^=ferriiiiinoidc8. 

 spur cat a Wlk. 



1857. Wlk., C. B. Mus,, Het., xi, 749, Xanthia. 



1868. G. & R., Traus. Am. Ent. Soc, in, 78, pr. syn. 



var ferruginoides Gn. 



1852. Gn., Spec. Gen., Noct., I, 398, Xanthia /crnH/iuea, var. 



1868. Bethnne, Can. Ent., i, 47 (49), Xanihia. 



1874. Grt., Bull. Buff. Soc. Nat. Sci., ii, 124, Orthosia. 



1875. Morr., Proc. Ac. Nat. Sci. Phil., 1875, 66, Xanihia. 

 1875, Speyer, Stett. Ent. Zeit., xxxvi, 119, Orthosia. 



hicoloratjot Wlk, 

 1856. Wlk., C. B. Mus., Het., x, 464, Xanthia. 

 1868. (4. & K., Trans. Am, Ent. Soc, in, 78, pr. syn. 



Habitat. — Canada to Pennsylvania, west to the ^Mississippi Valley, 

 August to November. 



The types are all in the British Museum and refer to one species 

 only. It is rather curious that ferrngino ides should so long have stood 

 for the species with bicolorago as the variety, while the opposite must 

 be the status. Bicolorago itYecedesferruginoiflcs by one page and was 

 described as a species j while ferruginoides was placed as a variety of 

 the European fcrriiginea. 



O. emoaG. & R,* 



1873, G. & R., Trans. Am. Ent. Soc, iv, 431, Xanihia. 



pnia II G. & R. 

 1868. G. & R., Traus. Am. Eut, Soc, i, 347. pi, 7, f. 50, Xanthia. 

 1873. G. & R., Trans. Am. Ent. Soc, iv, 431, n. b. 1. 



Habitat. — Canada in July and ►September, to Pennsylvania, to the 

 Mississippi Valley; Colorado. 



I have not seen the type. Specimens named by Mr. Grote are in the 

 British Museum. 



O. inops Grt.* 



1881. Grt., Bull. Geol. Snrv., \\, 270, Orthosia. 



Habitat. — Kittery Point, Maine, in Sei)tember. 

 The type is in the British Museum; duplicates are in Dr. Thaxter's 

 collection. 



O. hamifera Grt. 



1888, Grt,, Can, Ent., xx, 130, Orthosia. 



Habitat. — California. 



I have not seen the type. It is probably in Mr. Grote's possession, 

 or it may be with Mr. Jas. Behreus in San Francisco. It is said to be 

 ue^r purpurea, but larger. 



