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BUTTERFLIES OF MAINE. - 25 
Sub-Family—PIERIN &. 
3. PIERIS OLERACEA, Har. Fig. 3. 
Pi’-e-ris ol-e-ra’-ce-a. 
Expanse of wings, nearly two inches. 
Upper side of the wings white, a little dusky at the base. 
Under side white, dusted along the veins more or less with 
brown scales which are prominent on the veins of the hind 
wings. 
Body black above, and whitish beneath. 
The larva feeds on the leaves of cabbage, turnip, radish, 
mustard and other plants of the order Crucifere. 
The eggs, one or two of which are deposited 
on the under side of a leaf, are somewhat pear- 
shaped, of a pale greenish white color, about 
one-twentieth, of an inch long, and not more 
than a third as much in diameter. They are 
marked with about fifteen sharp ridges running 
lengthwise with cross lines between, and hatch 
in about ten days. 
Fig. 4. 
The newly hatched larva is of a glassy, Egg of Pieris oleracea. 
watery-white color, thinly clothed with fine eet 
shortish hairs. They first eat the egg shells from which they 
escaped, and then begin upon the leaf, eating round holes 
through it, soon changing their color to green. They feed 
