Sept.,i9io.] Smith: North American Agroperina. 141 



maculation of primaries is complete. The ground color is fulvous 

 yellow tinged with reddish, and the maculation is purplish brown to 

 blackish. The basal and median lines are geminate, the median shade 

 is conspicuous, and the s.t. line is defined by a preceding purplish 

 shade. The ordinary spots are completely outlined and the reniform 

 inferiorly is dark-filled. Altogether an unmistakable form, in which 

 there is little variation except that due to a fading of the darker lines. 



The vestiture is narrowly flattened hair, forming on thorax a small 

 longitudinal crest divided anteriorly and posteriorly. The dorsal 

 tufting of the abdomen does not extend beyond the middle in any 

 case. The male antennae are ciliate, but there is also a single long 

 bristle on each side of each joint. 



The genitalia of the male are of the usual type : the tip of the 

 harpe is much broader than in any other species, with a rather large 

 patch of small stout spinules at inner angle ; clasper rather long and 

 moderately slender. The uncus is very slender, but slightly dilated 

 before the pointed tip. Sheath of penis almost evenly cylindric, with 

 two little denticles near the tip. 



This species occurs in August and September from Canada to 

 Virginia, and west to the Rocky Mountains. I have not seen any 

 specimens from the western slope. 



Lntosa Andrews is a pale yellowish gray species more or less pow- 

 dered with reddish and sometimes, especially in the female, very 

 decidedly rufous even in ground. The wings are much narrower 

 than in liclva and obtuse at tip. The normal maculation is all present 

 but never conspicuous, and the most obvious feature is the dusky 

 filling of the inferior portion of the reniform. Very rarely the entire 

 reniform is dusky and gives the specimen a somewhat unusual 

 appearance. 



The thoracic vestiture is mostly flattened hair, the intermingled 

 scales being in many cases short, broad, spatulate forms, set upon a 

 very long hair-like s^^vlk. The dorsal tufting is very obscure, form- 

 ing a low, keel-like ri.ge slightly divided in front and scarcely marked 

 behind. In the average example in collections, this tufting is prac- 

 tically indistinguishable. The abdominal tufting is at base only, and 

 never conspicuous„.tven there, while of most females, even in good 

 condition, it might oe said that they are untufted. In the males the 

 lateral tuftings are generallv distinct. 



