206 ENTOMOLOGICAL NEWS. [May, '08 



sometimes earlier and is on the wing until June and the earlier 

 part of July. This varies, of course, according to the locality. 

 In Colorado it appears in May and June, and in Montana we 

 have taken newly emerged specimens as late as July. In the 

 high Sierras it flies until the end of July. 



The flight of ansonidcs is much similar to that of congeneric 

 species. It flies but a few feet above the ground, in a some- 

 what zigzag, aimless course, alighting only on flowers. It was 

 probably for this reason that the name Anthocharis* was given 

 to the genus by Boisduval. When alarmed, however, its 

 erratic flight makes capture difficult. Little has ever been writ- 

 ten of the preparatory stages of ausonides. Mead found the 

 eggs and larvae in Colorado and Edwardsf has figured the 

 egg, larva and pupa and described the mature larva and pupa. 

 Beutenmuller has briefly compiled a description of the larva 

 and chrysalis and Hy. Edwards, in the Proc. Cal, Acad. 

 Science, v. 5, p. 326, describes the larva from Mead in litt. 



In a letter to W. H. Edwards, Mead writes: "At Turkey 

 Creek Junction there were many eggs and some larvae to be 

 found, the latter feeding on the flowers and seed vessels of a 

 cruciferous plant. The eggs were long, ribbed longitudinally, 

 and in color light yellow. The larvae are solitary, and are 

 seen stretched at length on the stem or seed-pods of the plant." 

 The transitional stages of the larva have never been described. 

 At first, we had some difficulty in finding the eggs but a little 

 experience made it easy. The egg-laying habits are much simi- 

 lar to those of allied species and agree well with olympia, the 

 life-history of which was recently described by ShullJ. Our 

 first record of oviposition is March 14, but this is perhaps 

 a little earlier than usually occurs. The eggs are mostly 

 placed on the sepals of the young inner buds of the plant and 

 also quite commonly on various parts of the pedicel, especially 

 on the rachis. In a few cases we have observed the female 

 ovipositing on the leaves. The illustration shows the normal 

 position. We have never seen a female lay more than one 



* Av0os (anthos), a flower, and Xaijpeiv (chairein), to delight in. 

 fButt. N. Am. Vol. II, pi. 2. 

 JEnt. News, Vol. XVIII, 1907. 



