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. 



Aniennce 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. Antennas 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. 

 Antennce 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 



