122 LEPIDOPTERA OF NORTH AMERICA. 



5. S. ericetorum Boisd. Ann. Soc. Ent. 2me ser. X, 313. 



Upper side of the male white, a little sulphury, having no other 

 markings than a festooned terminal line, forming a row of small 

 sagittate spots, resting on a black line at the root of the fringe ; 

 at the summit of the superiors the small spots form two or three 

 rows. Under side of the wings white ; that of the secondaries 

 with two brownish bands, the one covering a part of the base, and 

 the other at the extremity. Upper side of the female blackish, 

 with two white transverse bands ; the first in the middle, wide, 

 sinuous, irregular ; the second, much more narrow, formed of small 

 sagittate spots, except that which is on the upper edge of the 

 primaries, which is quadrangular, and cut by the nerves. 



California. 



BOISD. 



SEC. II. HETEROCERA. 



Antennas, variable; prismatic, pectinate, serrate, moniliform 

 or filiform. Wings never erect when at rest: the posterior 

 pair frequently frenate. Ocelli generally present. Flight 

 sometimes diurnal, sometimes crepuscular, more frequently 

 nocturnal. 



FAM. I. EPIALIDAE. 



Proboscis short or none. Palpi obsolete. Antennae moni- 

 liform, scarcely longer than the width of the head. Thorax 

 not crested. Abdomen not barbate. Wings deflected, long, 

 narrow, nearly equal. Primaries opaque, secondaries semi- 

 hyaline. 



EPIALUS FAB. 



Antennae shorter than the thorax, moniliform, inserted at the 

 anterior and lateral part of the head, a little above the eyes. Palpi 

 indistinct. Proboscis spiral, but slightly apparent. Wings elon- 

 gated, rather narrow, tectiform. Body more or less pilose the 

 last abdominal segment of the female forming an elongated oviduct 



