226 BULLETIN 44, UNITED STATES NATIONAL MUSEUM. 



S. sidus Gn.* 



1852. Gn., Spec. Gen., Noct., I, 386, x<'<>/><'l<n>ma. 

 1856. Wlk., C. B. Mus., Het., x, 454, EupxUia. 



1873. Grt.. Bull. Buff. Soc. Nat. Sci., 1, 191, Scopcloxnma. 



1874. Grt., Bull. Buff. Soc. Nat. Sri., n. 71, X<-o]>< lo^nm. 



rinitlenta Grt. 

 1864. Grt., Proc. Eut. Soc. Phil., n, 440, pi. 9, f. 6, Di<-iitjraiiima. 



1873. Grt., Bull. Buff. Soc. Nat, Sci., i, 191, pr. syn. 



1874. Grt:, Bull. Buff. Soc. Nat. Sci., n, 70, an sp. dist. 

 1882. Grt., New List, 32, an var. xhhix. 



1884. Thaxter, Can. Ent., xvi, 32, life history. 



HABITAT. Texas; New York, and northward. 



Guenee's type is in the British Museum and is like Mr. Grote's rin- 

 ulenta. 



S. niorrisoni Grt.* 



1874. Grt., Bull. Buff. Soc. Nat. Sci., n, 70, Scopelosoma. 

 1884. Thaxter, Can. Ent., xvi, 30, life history. 



HABITAT. New York; Massachusetts, northward to Canada. 

 The type is in the British Museum. 



S. devia Grt.* 



1874. Grt., Proc. Ac. Nat. Sci. Phil., 1874, 209, Scopelosoma. 

 1884. Thaxter, Can. Ent,, xvi, 33, life history. 



HABITAT. New York and northward. 

 This type is in the British Museum. 



Genus LITHOLOMIA Grt. 

 1875. Grt.. Can. Ent., VII, 206. 



L. napse Morr. * 



1874. Morr., Proc. Bost. Soc. N. H., xvn, 152, Scopelosoma. 



1875. Grt,, Can. Ent., VII, 206, 207, pi. I, f. 4, JAthnlomla. 



HABITAT. Canada in May; Massachusetts; New York; Northern 

 and Eastern States; Colorado; California in September. 

 I have not seen the type, nor do I know where it is at present. 



L. dunbari Harv. 



1876. Harv., Can. Ent., vin, 52, Hadena. 



HABITAT. Vancouver. 



The type is in the Edwards collection and is fully congeneric with and 

 closely allied to napw Morr. It is scarcely likely that the two will 

 prove to be identical, but the differences are reducible to small varia- 

 tions in marking's and are in no sense generic. I have handled a very 

 large number of specimens of napw, without finding a dunbari among 

 them. 



Genus XYLINA Ochs. 

 1816. Ochs., Scliinctt, Eur., IV, 85. 



I use this name in preference to Lithophane because both arc cata- 

 logue names and Xylitia has priority. The Yerzeichniss was not pub- 

 lished until 1818 at least. All the species so far as known to me ap- 

 pear in autumn, hibernate, and reappear in early spring. 



