146 Mr. H. J. Ehves on the Genus Colias. 



C. PMlodice, var. Laurentina Scud. Proc. Bost. Soc. 



Nat. Hist. p. 4, Oct. 1875, from Lake 



Superior, 

 are found in other parts of North America ; and ac- 

 cording to Mr, Strecker's catalogue and to what I can see 

 from the figures and descriptions, they are at most but 

 local varieties of one species. Indeed, I cannot see how 

 the numerous forms of Palcano, Pelidne and Fhilodice, 

 found in North America, can be assigned with certainty to 

 one or other of these species ; and the confusion of names 

 which exists is so great, that without access to the prin- 

 cipal collections in the United States, it seems to me 

 impossible to unravel them. 



