^^isoT"^'] PROCEEDINGS OF THE NATIONAL MUSEUM. 201 



6. Ordiuary spots not subequal, reniforui usually narrow, pale or white marked, 

 somewhat constricted medially ; transverse lines distinct 7 



Ordinary spots small, subequal, white ; transverse lines obsolete 8 



7. Harpes of <? with a long hook at tip; clasper nearly as long as 

 harpes Group . . renigera. 



Harpes of ^ with tip rounded, lappet-like ; clasper shorter, cylindri- 

 cal Group-.OLIVACEA. 



Harpes of ^ with a loug narrow piece set at an angle to base ; obliquely 

 truncate at tip ; clasper short, thick, beak-like Group.. laudabilis. 



8. A long black basal streak with a loop at tip marking the clavi- 

 form Group 4-annulata. 



9. Costa dej)re8sed, color a reddish pearly gray ; lines pale Group.. innexa, 



Costa not depressed; color ash gray or darker; lines dark or black- 

 ish Group . . PENSILIS. 



DIVISION A. 



The species here associated have little in common save more or less 

 distinctly serrated male antennae. In wing form, in maculation, and in 

 the genital structure of the male, the greatest diversity is found, and 

 but for the fact that no better basis for group divisions could be found, 

 no attention would have been paid to the antennae at all. 



Some slight groupings are possible, though the number of species in 

 any one group is small. 



At the head of the series I place four species, agreeing in large size 

 (about 2 inches), pale grayish primaries, in which the apices are rec- 

 tangular, the outer margin oblique, and in general style of maculation. 

 The male genitalia are after one type, though by no means alike, and 

 are described for each species. 



Discalis is known by the comparative indistinctness of maculation, 

 pale primaries, and white secondaries. The male antennae are very 

 slightly serrated and ciliated only. In the others of this series the sec- 

 ondaries are dusky. 



Bogenhoferi is a rather dull, fuscous gray species, with an evident 

 median shade, the s. t, line not well marked, preceded by a row of 

 defining dark spots. The male antennse are distinctly serrated and 

 ciliated. 



Nimhosa is distinctly marked, whitish. The s. t. line is concolorous, 

 irregular. There is no obvious median shade, though a faint dusky 

 line is traceable. The male antennse are more distinctly serrate than 

 in discalis, less so than in rogenhoferi and the joints are furnished with 

 lateral bristles. 



Imhrifera as compared with the preceding is sordid in appearance, 

 and is strongly flushed with grayish fuscous. The s. t. line is broad, 

 pale, and even. Secondaries blackish. The male antennte are still more 

 serrate and the lateral bristles stouter. 



All of the preceding have very distinct, divided thoracic tufts. 



Nearly equaling the preceding in size, but of a fine purplish or lilac 

 gray shade, is ^Jwrpwrnsa^ft. The median lines are obsolete, the ordi- 



