June, I902,] SeIFERT : NORTH AMERICAN ArCTIID.E. 85 



Stage VII. — Length of larvae when resting about 3.2 cm.; when in 

 motion 3.5 cm.; width of head 3.0 mm.; width of eighth segment 6.5 

 mm. Head shiny black, setK of uneven length, sparse. Epistoma and 

 bases of antennae sordid greenish- white, tips black. Neck reddish- 

 brown. Dorsal, subdorsal and lateral regions of body velvety black with 

 bright warts. With about 65 per cent, of the larvae a dorsal row of more 

 or less rounded milk-white spots is present, most pronounced from 

 the fourth to tenth segments, usually narrowed to a fine line on second, 

 third and eleventh segments, always absent on first and twelfth. Be- 

 lovv the lateral area the color is a dull, smoky coffee-brown, almost 

 greasy looking ; the rows of tubercles and their bases dull black. 

 Stigmata elliptic, narrow, deep ochre with black rim. Venter dull 

 dark brown. Thoracic legs black, bright ; within the joints greenish- 

 white, prolegs dull blackish. Bristles of uneven length rather short and 

 stiff, black above the spiracles, reddish from the stigmatal warts down- 

 wards, also those anteriorly on first segment covering upper part of head. 



About 35 per cent, of the larvae have the white dorsal spots more 

 or less obscured, some (about 10 per cent, of the brood) have the 

 spots entirely obliterated. 



The larvEe before pupating exude moisture and if well fed and 

 kept in roomy cages they form a voluminous, moist but loose cocoon, 

 mostly between leaves and soon transform to pupae. These quickly 

 turn from pale yellow to orange, reddish-brown and maroon, often 

 covered with a light bluish bloom. Many of the pupae remain 

 this way, but many deviate remarkably in color. Pupae formed at the 

 same time vary from uniform reddish-brown shades to reddish-brown 

 with dark brown wing cases ; often they are evenly dark brown or with, 

 lighter segmental joints ; stigmata of the lighter-colored pupae dark 

 brown. Thoracic segments and sheaths of limbs rather rugose; im- 

 movable segments wrinkled and densely punctured, movable ones 

 finely punctured anteriorly, bright and smooth posteriorly. On the 

 vertex just above the eyes are two patches of short, even, knobbed 

 bristles, similar to those forming a brush-like bunch at cremaster. 

 Above spiracles to dorsum the pupa is partly covered with patches of 

 very short even hair, like all the species of this group. 



The 9 $ imagines appear first, early in the morning ; the ^ ^ 

 following soon ; the latter when disturbed emit (like all the Eiiprepia'} 

 a clear, greenish liquid near the patagia which has a decided " citro- 

 nella"-like smell. 



