385 



specimens of fishii Fern., but the types appear to be small pale 

 examples of mathezvianus. The genitalia of similar specimens cor- 

 roborate this. 



The species is very variable in all features, but its generally pale 

 appearance, with more or less pure white on the primaries, separates 

 it from the allied forms. The two specimens from Colo, and Sebec 

 Lake, Me., which we refer to it are extremely pale. That from Colo, 

 is white with brown irrorations, and that from Maine somewhat 

 darker and with a trace of brownish shades in addition to the irrora- 

 tions. We are unable to place these specimens elsewhere, and in all 

 essential features they agree with mathewiamts. Both are males, so 

 we have the additional evidence of genitalia to verify the identifica- 

 tion. There is one lightly marked and faded specimen in the National 

 Museum from Beulah, N. ?il., 8000 ft., which we think belongs here. 



The life history is unknown. 



4. OiDAEMATOPHORU.s EUPATORii FernaUl, PI. XLV, fig. 15. Fl. LL 

 fig. 4. 



Alucita cupatorii Fernald, Smith's List Lep. N. A. 87, 1891 (in part). 



Id., Can. Em. XXV, 96, 1893 (in part). 

 Pterophorus cupatorii id., Pter. N. A. 52, pi. V, II. IS, 16, 1898 (in part). 



Dyar, Psyche VIII, 250, 1898 (biol.). 



Fernald, Bull. 52 U. S. N. M. 446, 1902 (in part). 



Meyrick. Gen. Ins. C, 17, 1910. 



Winn, List Ins. Que. 86, 1912. 



Meyrick, Wagner's Lep. Cat. pars 17. 25, 1913 (in part). 



? Walsingham, biol. Cent. Am., Lep. Hct. IV, 444, 1915 (in part). 



Barnes & McDunnoiigh, Check List 151, 1917 (in part). 



McDunnough, Can. Ent. LIT, 92, pi. II, f. 4, 1920 (biol.). 

 Head whitish between antennae, tinged with brown in front and above; 

 sometimes darker. Thorax whitish with a brown band, including tips of pata- 

 gia ; sometimes suffused with brownish. Abdomen whitish with brown on sides 

 and across fifth segment, to ochreous witli scattered brown scales, a few dorsal 

 dots, and much darker brown areas; vestiture roughened on hind margins of 

 segments in posterior half. Antennae dotted with brown above. Palpi brown 

 on sides ; moderate, slender, oblique with third joint porrect. Legs with heavier 

 tufts on fore and mid tibiae than in the foregoing species. Front and middle 

 tarsi white without brown scales except a trace in the darkest specimens. Hind 

 legs whitish or suffused with brown, variably annulate with brown at bases 

 of spurs and tips of tarsal joints. 



Primaries with costal area usually whitish, always paler than inner part. 

 Inner half of wing with dull brown shades, the veins with paler, often whitish, 



