COLIAS I. 



Acad. Nat. Sci., June 5, 1876, were much larger than any San Bernardino exam- 

 ples, the larva measuring 1.45 inch, the chrysalis .95 inch. 



The several stages from egg to pupa are closely like other Coliades de.scribed 

 in these Volumes. There is no generic difference whatever observable in any of 

 these stages between Eurydive and Phllodice. So far as I am acquainted with the 

 butterflies, there is no case whore a natural genus does not show its distinctive 

 characters in the preparatory stages, either in all of them, or part. Hence I have 

 declined to accept the genus Megonostoma, created by Reakirt, in 1863, to ac- 

 commodate Ccesonia and Eurydice. There is no more natural genus than Colias, 

 and it seems to nie cpiite enougli that the differences in the iinagos, which are 

 trifling at best, should be indicated by Groups, as I have treated them in my Cata- 

 logues. 



