GENUS HETEROCHROA 181 



Lorquini has the regular Limenitis manner of flight — a series of 

 short, twitching motions, with the wings out fiat, saihng about in a 

 very leisurely manner, apparently having nothing to do but to sun 

 itself, and to have a good time. 



The larval food-plant is salix lasiolepis, or common water- 

 willow ; and the female lays one egg solitarily on the tip of a 

 young leaf. The egg is white, long, and spindle-shaped. I do 

 not know that any one has ever followed out the stages of larva 

 and chrysalis, though it would be quite easy to do so. 



241. Limenitis Eavesi. 



No figure. 

 Eavesi is a variety of Lorquini, with the red of the apices obso- 

 lete or not present, and sometimes some indications of white sub- 

 marginal spots on hind wing. It is said to be rather common in 

 British Columbia and Alaska, and has been given varietal names 

 by different writers, Eavesi being one, and Burrisoni another. It 

 is simply a cold-weather form of Lorquini, and found only in cold, 

 northern localities. 



Genus HETEROCHROA. 



This genus is made for a single species and a variety, the two 

 names are Bredowi, and Californica; though it would be diffi- 

 cult to say which of them is the stem and which the variety, as they 

 are simply climatic varieties, Bredowi of the north, and Californica 

 of the south. 



The sex-marks are difficult to distinguish, for the beginner. 



The food-plant is quercus, the evergreen oak tree leaves. 



242. Heterochroa Bredowi. 



No figure. 

 Bredowi is like unto the next species, Californica, except that 

 the band of spots across both wings is white instead of yellow, as 

 in the Figure 243. The average size of the two forms shows 

 Bredowi to be the smaller of the two, and its habitat is to the 

 northward. 



243. Heterochroa Californica. 



Plate XXIII ; Figure 243. 

 Californica is a mountain butterfly, inhabiting the canyons 

 along the mountain sides rather than the higher slopes and crests. 



