%\t Canaimtn Entomologist. 



VOL. V. LONDON, ONT., DECEMBER, 1873. No. 12 



ON SOME OF OUR COMMON INSECTS. 



10. THE CLOUDED SULPHUR BUTTERFLY- 



Colias philodice, Godt. 



BY THE EDITOR. 



Fig. 21. 



The clouded sulphur is everywhere one of our commonest butterflies, 

 abundant in its season in fields and roadways, frequently congregating in 



groups on the borders of streams 

 and springs, where, in hot weather 

 they seem to enjoy settling on the 

 moist ground. They are still more 

 abundant in clover fields as the 

 season advances. 



The female of this species differs 

 somewhat in its markings from the 

 colours, yellow and black. male, as will be readily seen by 



reference to the figures, 21 representing the female, 22 the male. The 

 ground colour of the wings in both sexes is bright yellow, marked on the 

 outer edge with a dark brown or blackish border, narrower in the male 

 than it is in the female, while in the 

 latter it encloses on the anterior wings 

 a broken row of irregular yellow spots- 

 There is also a spot of black placed 

 near the front edge of the fore wings, 

 about half way between the base and 

 tip, varying in form and distinctness. 

 The hind wings in both sexes are less 



heavily margined, and near the middle colours, yellow and black, 



is a dull pale orange spot. Both wings are dusky towards the base, and 

 the fringes are pink. 



Fig. 22. 



