170 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxv. 



The streakii;gs are more prominent than usual and, altogether, it has 

 all the group characters better and more completely developed than 

 any other species. The black basal streak is obvious in this species. 

 In tabular form the species separate readily, as follows: 



Primaries without a basal black streak. 



Size small, all the markings obscure; veins white, not ol)viously relieved by 

 darker streakings; secondaries whitish, even dia 



Size larger, all the markings obvious; veins relieved by definite streakings; sec- 

 ondaries outwardly blackish or smoky, not even heterodoxa 



Primaries with an obvious curved black or blackish basal streak. 



Size small, primaries more obtuse; color luteous dull gray, rarely shaded with 

 red megadia 



Size large, primaries a little more pointed; color reddish gray, shading into brick 

 red insueta 



The species extincta is entitled to rank as a group by itself because 

 of its rather narrow primaries which are acute at the apex, a little 

 incurved below, and form an obvious obtuse angle below the middle 

 of the wing. The thoracic vestiture is rather tine and thin, forming 

 no obvious tufts and relieving neither collar nor patagise; the collar is 

 crossed by two transverse lines. The primaries are very obviously 

 streak}^, while the lines are not contrasting; there is a white point 

 relieved by a few black scales at the end of the median vein and the 

 transverse posterior line is bent very strongly inward below the 

 middle. 



In some respects the species resembles the Ugata group, but the 

 wing form differs materiall}^ and the sexual characters are more nearly 

 like pliragm atidicola th rough j uncicola. 



The leg tuftings in the male are not well developed. There is the 

 usual fringing on the femora, much reduced and a little thickening of 

 the vestiture on the middle tibia; nothing like a well-developed tuft. 



The genitalia of the male consist of very broad, irregularly oval 

 harpes from the upper margin of which very narrow tips extend. 

 The end of each tip is somewhat rounded and set with long, slender, 

 bristle-like hair. The clasper consists of a broad chitinous plate from 

 the upper angle of which come two curved corneous processes. One 

 of these is cylindrical, hook-like, and extends downward; the other is 

 beak-like and is directed upward, extending beyond the upper margin. 



The male antenna3 have single longer bristles laterally on each joint. 



The species is not easily mistaken and occurs along the Atlantic 

 coast to Maine. 



Leucania j uncicola also stands by itself on genital characters, ))ut 

 superficial!}^ it resembles the gvo\x\) j^hragmaticlicola \Qvy closely. The 

 body is robust, thorax quadrate, collar and patagije well marked. The 

 collar has a series of transverse lines of different colors, culminating 

 in a broad purplish band below a narrow whitish tip; the band made 

 up of three narrow lines of black, blue, and brown. The little tuft 



i 



