Ranges from Canada to Florida and westward to the Rocky 

 Mountains. 



(2) Colias eurytheme Boisduval, Plate CVI, Fig. 1. & ; Plate 

 CVII, ? ; form keewaydin Edwards, Plate CVI, Fig. 2, J 1 (The 

 Orange Sulphur). (See pp. 182 and 183.) 



This is a form which is known to be very strongly polymor- 

 phic, having quite as many varieties and races as Lycoena 

 pseudargiolus, for instance. C. keewaydin is a large winter 

 form, which has the wings strongly washed with orange; there 

 is a small winter form called C. ariadne, which is also laved with 

 orange, though not so strongly. There is another form called 

 C. eriphyle, which belongs to the summer brood, which has no 

 orange on the wings, but is plain yellow; and there are still 

 other forms. Expanse 1.60-2.15 inches. 



The Orange Sulphur has a wide range, extending from the 

 Atlantic to the Pacific, and from Canada to the northern por- 

 tions of the Gulf States, though not invading the hotter parts 

 of these states. 



GENUS TERIAS SWAINSON (THE YELLOWS) 



Small butterflies, generally some shade of orange or yellow, 

 with wings more delicate in structure than most of the genera 



181 



PL. CV 



