J^o. 2. J GROTE ON NORTH AMERICAN MOTHS. 275 



the middle. Costal edge pale brown, and there are three or four double 

 dottings of pale scales at regular intervals. Hind wings fuscous, with 

 a faint purply reflection, faintly dotted about apices. Beneath fuscous, 

 the edges of the wings pale ochrey, dotted and marked. Head and 

 thorax pale brownish ochrey; palpi with the second and third joints 

 largely fuscous, tipped with pale ochrey. Legs fuscous, dotted with 

 pale. Expanse, 34 mil. Hah. — New York. 



This large species has been for sometime in my collection under the 

 specific name here given to it. Professor Fernald has kindly assisted me 

 in my endeavors to determine it, and I conclude that, while it is near 

 Psecadia, it cannot be admitted into that genus, but forms a new generic 

 type. The species is in other collections, and Professor Fernald has dis- 

 tributed my MS. name ; from its large size and simple markings it can be 

 easily identified. 



Psecadia semiopaca n. s. 



S. White; the costal and larger half of primaries black. Third joint 

 of palpi white, second joint almost wholly black. Head white ; the 

 clothing of the face is mixed with black scales. The antennse are ciliate ; 

 the basal joint black with some white scales beneath and at base. Tarsi 

 blackish, annulate with white. Tibise and femora of hind legs pale yel- 

 lowish. Middle and fore tibiae blackish flecked with white. Abdomen 

 yellow, shaded with fuscous over the dorsum. Thorax white with a 

 black spot on each shoulder, and two more behind, larger, one on each 

 side of the dorsal line. Fore wings with the upper portion wholly black 

 or blackish except the tips, which are white and show distinctly the 

 black terminal dot of the interrupted series. Although the black por- 

 tion of the fore wings fades a little to costa it everywhere vividly con- 

 trasts with the pure white ground color. The lower edge of the black 

 portion of the wing is irregular. At basal third it runs upwards, leav- 

 ing a black spot on the white field of the wing. It runs in again more 

 deeply at outer third, and the black portion of the wing reaches the ex- 

 ternal margin narrowly below the apices, soiling the fringes. Fringes 

 pure white. A terminal row of black dots. Costal edge whitish. Hind 

 wings pale fuscous, becoming whitish translucent over internal region; 

 fringes whitish. Expanse, 24 mil. Hab. — Colorado. 



Differs from arctostaphylella by the larger black portion of the prima- 

 ries which extends to outer margin flecking the fringes. The fringes of 

 the hind wings are whitish interlined at base with fuscous, not yellow, 

 and the secondaries themselves are paler. 



Oedemasia eximia, n. s. 



<? 9. This species is very much larger than hadia, but similarly col- 

 ored. All the markings indeterminate. Ground color a dusty faded 

 ochrey with an olive tint. In some darker specimens there is blackish 

 shading over the disc and beyond. Internal margin washed with pur- 

 plish. A narrow puii^le brown basal streak, running downwards along 



