34 
green; all these bands and spots slightly sprinkled with black 
scales. Body above covered with grey hairs; beneath, abdomen 
yellowish, thorax white; legs white; palpi white, gray on upper 
side and ,at tip; antennae white above and at base below, beyond 
brown; club black, nearly covered with rows of white scales; tip 
pale fulvous. 
Female. —Expands 2 inches. 
Primaries less produced and broader than in the male, same shade of 
color; tl'e marginal spots enlarged and extended to second branch 
of median; in addition to the three submarginal spots, which are 
also enlarged, is another in submedian interspace and a streak 
below this along inner margin; the cellular spot much enlarged, 
rhomboidal, with slight central streak; secondaries have a patch on 
costa and four on the marginal nervules commencing at and pos¬ 
terior to subcosta, also an interupted sub-marginal stripe opposite 
cell, posteriorly indistinct; underside as in male except that a 
round black spot appears in submedian interspace on primaries. 
(Edwards.) 
6. P. OCCIDENTALIS. 
This species, as before stated, is closely allied to Protodice and 
Beckerii , but according to Edwards is abundantly distinct from them. 
7. P. Sisymbeii: 
Upper side white; primaries with a subcostal spot; a transverse, 
interrupted ray and some longitudinal streaks at the end of the 
nerves, blackish brown; secondaries without spots. Under side of 
primaries similar to the upper, except the streaks, which are powder- 
„ ed with greenish brown. Underside of secondaries white, with the 
nerves widely edged with greenish brown, dilated towards the mar¬ 
ginal edge and nearly united between this edge and the cellule by 
a transverse ray; obsolete, more or less interrupted. (Boisduval.) 
In reference to the habits and to the laivae of most of these species 
and varities, except the three most noted, Bapce ) Oleracea and Pro¬ 
todice, but little appears to be known. 
The larvae of Monuste is violet vvith yellow longitudinal lines; the 
head, feet, and under surface of the body yellow or greenish-yellow. 
It feeds on a species of Spider Floicer, —( Gleomepentaphylla) which be¬ 
longs to a group of plants much resembling the crucifera, though 
more acrid in their properties. 
The specimens upon which Mr. Edwards founded his Beckerii were 
taken at Virginia City, Nevada, in April, on flowers of Brassica. 
The habits of Virginiensis are thus described by Mr. Edwards. “In 
the Kanawha district it replaces Oleracea , which is yet unknown there. 
It is not uncommon in the month of May, frequenting open woods 
rather than gardens, and in this respect differing in habit from the 
allied species. I have never met with it later than June, though 
Oleracea , in the northern states, is most abundant after that month 
and continues breeding till the early autumn frosts.” He states that 
he has received specimens from Mr. Sounders, of London, Canada, 
who informed him it was a rare insect there. 
“The larvae of this group of Pieris feed upon garden vegetables, 
Brassica, Raphanus, Nastertium, and allied plants in a wild state, 
and are sometimes exceedingly obstructive. The female butterfly de¬ 
posits great numbers of long slender pointed eggs upon the under- 
