HOW TO KNOW THE BUTTERFLIES 



BB. With no black bar at the end of cell R + M. 



C. Wings usually without spots, but sometimes with a 

 dark spot in cell M s of the fore wings. (P. napi), 

 p. 75. The Gray-veined White. 



CC. Lower side of fore wings with a dark spot in cells 

 M s and Cu 2 ; upper side of hind wings with a spot in 

 cell R . (P. rapes), p. 78. 



The Cabbage Butterfly. 



The Great Southern White 



Pontia monustc (Pon'ti-a mo-nus'te) 



Plate XIII, Fig. i 



This species is the largest of our Eastern pierids, expanding 

 from two to three inches. In the male the wings are almost 

 entirely white except a very narrow black border on the cos- 

 tal and outer margins of the fore wings. In the female the 

 black margins are wider, and the outer margin of the hind 

 wings is marked with a series of black triangular spots ; there 

 is also on the fore wings a bowed black band bordering cell 

 R + M in front and at the outer end. 



Caterpillar. — Length a little over one and one-half 

 inches; head large ; general color of the body lemon yellow 

 with purple stripes. 



Food-plants. — Cabbage, lettuce, and turnip. 



A very interesting note has been made on the 

 migratory habits of this species by Dr. Melli- 

 champ, of Bluffton, S. C. He says:' "Thousands 

 of these white butterflies have been steadily pass- 



