— 152 — 



laterally bristled in both sexes, much more distinctly, however, in the (f. 

 Head and thorax concolorous with primaries. Expands 1.25— 1.45 inch.; 

 31—36 mm. 



Hab. — Texas, Iowa, New York, Canada, Maine. 



In this species the tendency is to an obsolescence of all mark- 

 ings, and not infrequently the large white spot in the reniform will 

 be the only distinct feature of the wing. Mr. Thaxter, in describing 

 the larva of this species, concluded it distinct from sidiis {vinu/e?ita), a 

 conclusion which is strikingly borne out by the structural characters. 



S. sidus Gn. 



1852, Gn., Sp. Gen. Noct. 1, 386, Scopelosoma. 

 1856, Wlk., C. B. M. Mus. X, 454, Etipsilia. 

 i873> Grt., Buff. Bull. i. 191, Scopelosoma. 

 1874, Grt., Buff. Bull, ii, 71, Scopelosoma. 



vhmle7ita Grt. 

 1S64, Grt., Proc. Ent. .Soc. Phil, ii, 440, pi. 9, fig. 6, Dichagramma. 



1873, Grt,, Buff. Bull, i, 191, pr. syn. 



1874, Grt., Buff. Bull, ii, 70, an sp. dist. 

 1S82, Grt., New List, an var. sidus. 



1S84, Thaxter, Can. Ent. xvi, 32 (life history 1. 

 \'inous red-brown, more or less powdery, terminal space darker, all the 

 lines distinct. P]asal line distinct, obsoletely geminate, included space paler, 



of a violet tint. T. a. line rigidly oblique, 

 darker brown, with a preceding violet 

 shade. T. p. line blackish brown, parallel 

 with outer margin, somewhat dentate or 

 crenate on veins. S. t. line broad, con- 

 colorous, or but slightly paler, marked by the dusky terminal space, and a 

 preceding darker brown shade. The median shade is blackish, diffuse, an- 

 gulate as in walkerii. Reniform also as in zvalkerii, orbicular wanting. Sec- 

 ondaries blackish, with paler reddish fringes. Head and thorax concolorous. 

 Beneath rusty, powdery, disc of primaries blackish; a common outer dark 

 line and dark discal lunule. Antennre ciliate, most evidently so in the (^. 

 Expands 1.20 — 1.40 inch.; 30 — 35 mm. 



Hab. — Texas, New York to Canada. 



The only one of the narrow winged species that is \'inous brown 

 in color, and therefore readily distinguished. The affinities of the 

 species are elsewhere discussed. It is variable in color, and the 

 white of reniform is a variable quantity. Sometimes this species 

 and ivalkerii \\''\\ be so nearly alike in color that it will require close 

 examination to properly refer a specimen. Both in genital structure, 

 however, and in larval history they are distinct. 



S. morrisoni Grt., Buff. Bull. 2, 70. 



1874, Grt., Buff. Bull, ii, 70, Scopelosoma. 

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



