COLIAS V. 



in 1854. The Keport mentions, " C. Eurydice, the most beautiful of all known Co- 

 liades, having the size and form of Ccesonia, with much the same design ; but in this 

 brilliant sjiecies the yellow is rejilaced by a vivid orange and the fore wings have 

 a violet reflectiou" and "Ehodocera Lorqubii, which has nearly the form of our 

 Rhamni, with the hind wings a little less angular and a black sjiot upon the mid- 

 dle of the fore wings." 



The Lorquini has proved to be the female of Eurydice, connecting the genera 

 of Colias and Gonepteryx, (Rhodocera) in a remarkable manner. 



Mr. Henry Edwards writes me of this sjjecies. "This insect is too rare for us 

 to make many observations upon it. It appears to be very local, its chief home being 

 in Marin Co. about 25 or 30 miles from San Francisco. I have also heard of it 

 near Sacramento and liave occasionally seen it flying in the streets of this city (San 

 Francisco). It ajspears in May, the female being sometimes found as late as Au- 

 gust. Its flight is very rapid and wild and it is exceedingly difficult to capture. 

 I have seen it alight on the flowers of thistle, but only for a few moments and then 

 away to some considerable distance. The collector who is fortunate enough to se- 

 cure a good male has indeed a prize. The female Ls more common and is more 

 readily captured. I have heard of certain years in which this sj^ecies has been com- 

 mon, so that, like many other butterflies, it may appear periodically in considera- 

 ble numbers." 



