218 BULLETIN 44, UNITED STATES NATIONAL MUSEUM. 



O. bicolorago GIL* 



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



1X74. Grt., Bull. Buff. Soc. Nat. Sci. n, 124. var. fen-iujinoidcs. 



1875. Morr., Proc. Ac. Nat. Sci., 1875, 66,=ferrti(fhiohh-a. 



s))<trcata Wlk. 



1857. Wlk., C. B. Mus., Hot., XI, 749, Xanlliin. 

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



var ferrugiuoid.es Gn. 



1852. Gn., Spec. Gen., Noct., I, 398, Xanihiafi-n-uyiiiea, var. 

 1868. Bethune, Can. Ent., I, 47 (49), Xaxthiti. 



1874. Grt., Bull. Buff. Soc. Nat. Sci., n, 124, Orfhosia. 



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

 1875. Speyer, Stett. Eut. Zeit., xxxvi, 119, Orthusia. 



bicoloragoi Wlk. 



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

 1868. G. & R., 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 ferruginoides should so long have stood 

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

 be the status. Bicolorac/o precedes ferruginoides by one page and was 

 described as a species; while fcrniginoiilcs was placed as a variety of 

 the European ferruyinea. 



O. euroaG. & R.* 



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



jut i a || G. & R. 



1868. G. & R., Trans. Am. Eut. Soc., I, 347. pi. 7, f. 50, Xanthia. 

 1873. G. & R., Trans. Am. Eut, 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. mops Grt.* 



1881. Grt., Bull. Geol. Surv., vi, 270, OrtJwsla. 



HABITAT. Kittery Point, Maine, in September. 

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

 collection. 



O. haniifera 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 

 r purpurea, but larger. 



