186 GROTE & ROBINSON. 



a blackish zig-zag median shade-line most evident on costa, and be- 

 coming ftiint and straighter before internal margin. Fourth median 

 uervule marked with black scales. Beyond the discal streak the wing 

 is clear and whitish, forming an oblique pyriform space, limited out- 

 wardly by the subterminal line, and inferiorly by a dark shade below 

 third median nervule, somewhat as in H. obliqua, but wider and less 

 prominently contrasted with the rest of the wing. The transverse pos- 

 terior line traverses this clear space, and is composed of two faint, ap- 

 proximate, lunulate lines, which are hardly apparent and run evenly 

 and straightly across the wing. Subterminal line very oblique and 

 strongly marked, consisting of black, pulverulent, interrupted, broad 

 marks, not apparent at apex, and margining inferiorly outwardly the 

 dark shade above fourth median nervule. Terminally, the wing is 

 evenly sprinkled with olivaceous scales. Centrally, the costa is clear 

 grey; there is a series of preapical black dots. Secondaries, smoky 

 gi'ey, faintly tinged with olivaceous terminally. Nervules marked with 

 darker scales. Base, paler. A median, geminate, black line, enclos- 

 ing a clear colored linear space. Terminally the wings are most ob- 

 scurely shaded ; a terminal lunulate line ; fringes, pale, shortly inter- 

 rupted with black at the extremity of the nervules. 



Beneath, smoky grey; the general appearance of the upper surface 

 is vaguely indicated by powdery and darker scales. 



Expanse, 9 5 2.10 inch. Len(/th of bodi/, 1.00 inch. 



Habitat. — Atlantic District. (Pennsylvania !) 



We have before us a single male specimen from New York, which 

 apparently belongs to this species, but the primaries are too much rub- 

 bed to allow of certainty in the reference. This specimen expands 

 1.90 inch. The antennae are lengthily pectinate for nearly three-quar- 

 ters from the base. The patagia are mixed with ashen scales. There 

 is a basal black dash, apparently absent in the female. The black, ob- 

 lique, subterminal line is here as in the female, but reduced. Else- 

 where the wings are evenly dusted with olivaceous scales on a paler 

 ground, all the ornamentation being apparently lost. The seeimdaries 

 are paler than in the female and the shadings are lost. It is probably 

 correctly referred here, since the palpi are also marked laterally with 

 black scales. There is a tendency in this and allied species to have 

 the "veins" marked with dark scales, as an apparently inconstant 

 character. 



