Ranges from the Atlantic to the Rocky Mountains, and from 

 southern Canada to the Gulf States. 



(3) Pieris napi (Linnaeus), variety oleracea (Harris), Plate 

 XCVIII, Fig. 1, rf 1 ; variety pallida Scudder, Plate XCVI1I, 

 Fig. 2, cJ*; variety bryonice (Ochsenheimer), Plate XCVIII, 

 Fig. 3, ? (The Mustard White). (See p. 174.) 



Occurs throughout temperate and boreal North America, 

 ranging well up to the Arctic Circle; also occurs in the eastern 

 hemisphere, ranging from north Africa to the North Cape, and 

 all over temperate and subarctic Asia. There are a multitude 

 of forms which have been named and described; we give but 

 three of those found in America. Oleracea is a winter form; 

 pallida is the common form; and bryonice is a subarctic form 

 found in Alaska, Siberia, and the Alps in Europe. 



The species ranges from the Atlantic to the Pacific, and from 

 Alaska to the northern boundaries of the Gulf States. Ex- 

 panse 1.50-2.00 inches. 



(4) Pieris rapce (Linnaeus), Plate XCIX, Fig. 1, c? ; Fig. 2, 9 

 (The Cabbage Butterfly). (See p. 174.) 



This excessively common insect has been in comparatively 



. 173 



PL. xcvn 



