50 BULLETIN 44, UNITED STATES NATIONAL MUSEUM. 



Genus CYATHISSA Grt. 

 1881. Grt,, Bull. Geol. Surv., vi, 576. 



C. percara Morr. * 



1874. Morr., Proc. Bost. Soc. N. H., xvii, 213, Bryophila. 



1875. Grt., Proc. Bost. Soc. N. H., xvni, 414 Bryophila. 

 1875. Grt., Bull. Buff. Soc. Nat. Sci., n, 308, Jaspidea. 

 1881. Grt., Bull. Geol. Surv., vi, 576, Cyatkissa. 



HABITAT. Florida; Texas, March to May aud September; Colo- 

 rado. 

 The type is probably at Cambridge; but I have no memorandum of 



having seen it there. 



/ 



Genus CHYTONIX Grt. 

 1874. Grt., Bull. Buff. Soc, Nat. Sci., n, 66. 



C. pallia trie ula Gn.* 



1852. Gn., Spec. Gen., Noct., i, 26, Bryophila. 

 1856. Wlk., C. B. Mus., Het., ix, 26, Bryophila. 

 1874. Grt., Bull. Buff. Soc. Nat. Sci., n, 66, Chytonix. 

 1877. Grt., Can. Ent., ix, 196, Chtjtonix. 

 1883. Grt., Proc. Am. Phil. Soc., xxi, 155, Bryophila. 



iaspis Gn. 



1852. Gn., Spec. Gen., Noct., I, 209, Apamea. 

 1856. Wlk., C. B. Mus., Het., ix, 250, Apamea. 

 1874. Grt., Bull. Buff. Soc. Nat. Sci., ir, 66, Chytonix. 



1881. Grt., Papilio, I, 49, ? pr. syn. 



1882. Grt., New List, 23, pr. syn. 



HABITAT. Canada, May and June, to Virginia; Illinois; Minnesota; 

 New York and Massachusetts in Jnly; North Carolina in August. 



Guenee's types are in the British Museum. In paUiatricula the me- 

 dian space, is largely white, else I see no difference. This is a variable 

 feature in the species and is not sexual. 



C. seiisilis Grt.* 



1881. Grt., Papilio, I, 49, Chytonix. 



1882. Grt., 111. Essay, 51, pi. I, f. 6, Chytonix. 



HABITAT. Massachusetts; New York; New Jersey. 



The type is in the British Museum. The white spot in the median 

 streak is a variable character. I have a compared specimen exactly 

 like the type except in that respect. A typical specimen is in Dr. 

 Thaxter's collection. 



AGROTIS Auct. 



The species classed under the above generic term have been mono- 

 graphically treated by me in Bulletin No. 38 of the United States Na- 

 tional Museum, Washington, 1890, and in accordance with this revision, 

 the collections in the Museum are arranged. I have carefully com- 

 pared all the types in the European Museums with the characteristics 



