PL. CIV 



Caterpillars elongated; head small; body generally green, striped 

 longitudinally. They feed upon leguminous plants, and 

 especially upon the various species of clover (Trifolium) and 

 Astragalus, though some boreal species are known to feed upon 

 the foliage of huckleberries (V actinium) and willows. 



The genus is large and is found on every continent except 

 Australia. It is lacking in the very hot tropical regions of 

 both the New and Old Worlds, but is found in Greenland and 

 thence ranging south among the cordilleran uplifts to Pata- 

 gonia. It is represented from Japan to Norway, and turns up 

 at the Cape of Good Hope. 



(1) Colias philodice Godart, Plate CV, Fig. 1, tf\ Fig. 2, 

 albino, $ (The Common Sulphur). 



This is the common "Puddle-butterfly" or "Clover- 

 butterfly" which every child has seen gathered in swarms about 

 moist places, or hovering by the score or hundreds over the 

 blossoming clover fields. There are many variations both in 

 size and color. The females are frequently albinoes, that is 

 to say they are white, rather than yellow. Now and *hen 

 melanic males turn up, but they are rare. In these the wings 

 are black, of the same color as the borders in normal specimens: 

 Expanse 1.25-2.25 inches. 

 180 



