2.) 4 THP: CANADIAN ENTOMOLOGIST. 



In this species the thorax is concoloroiis with the anterior wings ; the 

 abdomen is smooth and flattened ; the wings are usually reddish brown or 

 gray, lustrous ; the median lines are blackish and confused, often accom- 

 panied l)y pale, faint shade lines ; the interior line is slightly oblique and 

 sometimes geminate ; the median shade is broad, black, arcuate, and 

 diffused, touching the reniform, which is reduced to a red or white spot. 

 The orbicular and claviform are absent. The exterior line is always 

 simple and denticulate ; the subterminal line is faint, light, preceded very 

 frequently by a dark shade, in which are sometimes formed, opposite to 

 the cell, black cuneiform dots. The fringe is concolorous. Posterior 

 wings dark grayish fuscous, sometimes almost black. The discal dot is 

 always present. Beneath the anterior wings are dark gray, with the 

 terminal space usually light ; the posterior wings lighter, with a distinct 

 discal dot. A common median line extends over both wings. 



Expanse 25 to 32 m. m. Hab. Atlantic States. 



Nearly forty specimens were examined from different localities. 



O. cyiiica can be justly called a variable species, but this one is infinite- 

 in its variations of size as well as color. vVe can not consider griseocincta 

 other than a specimen in which the reddish tint is entirely absent, and 

 the gray shades accompinying the lines are unusually prominent. The 

 forms of this species slide so gradually into each other that it is impossible 

 to draw distinct lines of demarcation. There are, however, two principal' 

 varieties ; in one the reniform is clear, white and conspicuous, and the 

 ground color is reddish ; in the other the reniform is reddish, or indicated 

 only by a few pale scales, and the ground color is gray with but slight 

 reddish admixture. Specimens of this latter variety (which is the only 

 one described by Guene'e) sometimes occur in which the ground color is- 

 red, but it is more frequently the other wa}'. 



In one specimen expanding only 25 m. m,, the reniform is white ; the 

 ordinary lines are diffused and black, coloring the whole wing, and 

 entirel}' obscuring the usual reddish shade. l\\ another, which approaches- 

 griseociucta, the expanse is 31 m. m. ; the reniform is simply a few collected 

 whitish scales. The lines are nearly obsolete, and the interior line is 

 preceded by a faint pale shade band. The ground color is a dull lustrous 

 slightly brownish gray. 



