N0.12S3. REVISION .OF SOME NOCTUID MOTHS— SMITH. 191 



LEUCANIA DIA Grote. 



Heliophila dia Grote, Cun. Eiit., XI, 187i», p. 29; 111. Essav, 1882, p. 56, pi. ii, 



fig. 19. 

 Leucania dia SuiTn, Bull. -44, U. S. Nat. Mus^., 1893, p. 187. 



Ground color a pale reddi.sh gray. Head and fore l)rca.st smok}- 

 tinged. Collar with a .somewhat darker line across the middle. 

 Thorax concolorous. Primaries without strong contrasts. Veins 

 white-marked or at least paler, the costal region gra}^ or whitish. 

 Interspaceal rays not prominent or contrasting. Transverse posterior 

 line punctiform. A series of very small terminal, interspaceal dots 

 which may be wanting. A narrow pale line at the base of the fringes. 

 Secondaries dirty whitish, almost uniform, veins a little darker. 

 Beneath, primaries pale reddish gray, costal region whitish to a dusky 

 blotch about one-fourth from apex. Secondaries whitish, powdery, a 

 little darker and more powdery over the costal area. 



Expanse. — 1.16 to 1.21: inches (29 to 31 mm.). 



Ilalntat. — California; Oregon, 



Three males and one female are before me. One of these agrees 

 perfectly with Mr. Grote's description. The second is more reddish 

 and a little larger and agrees better with the picture in the "Illus- 

 trated Essay." The others, from "Middle California," are somewhat 

 darker and have the interspaceal streaking much better marked. The 

 character emphasized by Mr. Grote in his description, i. e., the 

 absence of a dusky shading along the median vein, loses force here, 

 because, while it is by no means prominent, there is undoubtedly a 

 smoky line on each side of the vein. The triangular dusky shading 

 in the terminal area of the wing is also well indicated here. 



The heavily clothed cjuadrate thorax, as against the short, obtuse 

 wings, gives the insect a peculiarl}^ stumpy appearance. 



LEUCANIA MEGADIA, new species. 



Ground color a dirty reddish gray, tending to smoky. Head varies 

 to rusty or smoky, as does the forebreast. Collar with a blackish 

 central line. Thorax concolorous. Primaries with veins white, inter- 

 spaceal streaks obvious and tending to become black beyond the trans- 

 verse posterior line. The latter is punctiform and well marked. 

 Median vein margined by smoky shadings above and below, forming 

 a more conspicuous white dot at its end and usually emphasized there 

 by black scales, A distinct black or blackish basal streak in the sub- 

 median interspace. The costal region is usually paler gray. In the 

 terminal area of the wings the dusky shadings are so disposed as to 

 form a more or less obvious dark area over the internal angle and a 

 trigonate shading below the apex. Secondaries smoky yellowish, 

 nearly uniform. Beneath, primaries smoky reddish gray, disk darker 



