COLIAS IV. 



sentatives they are. The males are easy to recognize, but the females approach 

 each other so much, that, in some of my specimens I am puzzled myself, especially 

 when they are not quite fresh." 



I have received (December 1868,) a very interesting series of specimens of 

 both Eurytheme and Keewaydm from ]Mr. Henry Edwards, of San Francisco, a 

 careful and exjjerieneed observer, showing a much wider variation in Kcewayd'xn 

 than in the other, both in size and color. Some of the males are very small, 

 scarcely one half the size of the best developed, and they vary in color from deep 

 orange to lemon-yellow. Mr. Edwards writes, " I may notice that the flight of the 

 new species is much more rapid and varied than that of Eurytheme — that the only ' 

 variety which appears in the latter is in the case of the albino female, while the 

 male of the new species is constantly subject to run into the lemon-yellow variety, 

 which however, is rarely so well defined as in the specimen I send you. [Figured in 

 plate.] There appear to be two broods during the year, the insect being most 

 abundant early in the spring, in fact, before Eurytlieme makes its appearance. It 

 seems to be local and by no means widely distributed. I have chiefly found it at 

 Alameda and along the eastern side of the Bay as far as the San Jose district, but 

 it does not appear in San Mateo County, though Eurytheme is very connnon there. 

 As it is always hovering over jilants of Medieago, I presume the caterpillar feeds 

 upon that, but nothing is known by me of either larva or chrysalis at j)i'esent." 



From Illinois and vicinity of New Orleans I have received these two sj^ecies 

 in about equal numbers, but of a large number sent me by Prof. Moore, from Ox- 

 ford, Miss., all were Eurytheme. On the other hand specimens sent by Dr. Lince- 

 cum, and taken in Washington Co., Texas, have been nearly or quite all of the other 

 species. Of this collection about one-fourth the females were albino, and the others 

 were quite distinct in size and color from the female of Eurytheme. But two fe- 

 males sent from Illinois by ^Ir. "Walsh do very closely aj^i^roach that of Eurytheme, 

 and justify the remark of Dr. Behr. (Fig. 5.) 



