66 THE CANADIAN ENTOMOLOGIST 



Manitoba, and have some from there now in my colledtion. The 

 possibility of a mismatc by the 1894 male still rendered the as- 

 sociation doubtful, until Mr. Tarns bred similar specimens from 

 a dark female sordida, some of the results of which breeding are 

 referred to in the explanation to Plate II, given below. Its like- 

 ness to a red ochrogaster is so exact, that, though it well deserves 

 a varietal name, I dare not risk description except from specimens 

 bred from a known parent, and I have not enough of such for 

 distribution at present. 



I may summarize by l)rief1>' designating the named \ariations 

 of this species as follows: 

 c E. thanatologia Dyar. Light gre\', median and terminal space 

 dark mahogany brown, contrasting. Black sagittate 

 dashes preceding the subterminal line. Known in female 

 sex only. 

 \ar. boretha Smith. Dull sienna brown, with pale collar and 

 costa. Cell black filled, spots contrastingly pale. Sagit- 

 tate s. t. dashes. As a very grey female was included 

 under this description, the name should be considered as 

 applying to the red-brown form only. Females of this 

 form appear to be ^'ery rare, 

 ■.ar sordida Smith. I'niform dull red-brown or blackish- 

 brown, more or less shaded with black or smoky. Cell 

 darker or blackish. Sagittate s. t. dashes. This is a 

 considerably darker form than boretha, and lacks the pale 

 collar and costa. The great majority seen of this form 

 have been females. 

 \ar. perfida Dod. Even dark mahogany brown with a ver\- 

 few pale ochreous or sienna brown lines and shadings. 

 No black markings. Orbicular and reniform pale ringed, 

 concolorous centrally, the reniform contrasting somewhat. 

 Known to me in the female sex only. 



As each of Smith's descriptions was drawn from a series of speci- 

 mens, no two of which were alike, it seems best to fix the varietal 

 names as nearly as possible fitting the actual types. 



The expanse of the species varies from 34 mm. (a captured cT) 

 to 43 mm., the males as a rule being the smallest. I think this is 

 the most variable Euxoa known to me on this continent, with the 



