324 
MOTHS AND BUTTERFLIES. 
in one or two localities, where it may still be found in some abun¬ 
dance.' I refer to the White Mountain region of New Hampshire, 
and the Adirondack region of New York. 
Pieris oleracea. 
It is a delicate little creature varying from pure white to yellow¬ 
ish white streaked with gray on the veins above, while below the 
veins on the lower wings are margined by gray, and the tip of the 
Pieris oleracea. Under side. 
upper wings and all of the lower pair are yellowish. No less than 
ten different varieties of this species, each with its three scientific 
names, are recognized by entomologists. Let us hope that the 
Latin names may hold out to christen all the new varieties which 
may be discovered in the future, or that like this butterfly, the 
species-maker who manufactures new names by the wholesale may 
be started on the road to extinction by the law of the survival of 
the fittest. 
