320 THE CANADIAN ENTOMOLOGIST. 



Probably the facts which Mr. Snyder has observed would suggest to 

 most field naturalists that these slightly difi'ering forms were really only 

 varieties of one species rather than that this j^articular group of butterflies 

 had lost all sense of decency and propriety, which would be especially 

 shocking in view of one of their number having been named after a 

 bishop, and apparently our author was led to this conclusion in regard to 

 some, at least, of the supposed libertines, as will presently appear. 



Mr. Snyder states his opinion that dimorphism occurs among the 

 Argynnids, and believes " that at least two of our so-called species are 

 in reality dimorphic males of species previously described," but he does 

 not give the names of these species, which are all males. 



The author thinks that a thorough exploration of the territories 

 where these disputed forms occur will result in revelations that will startle 

 those who have hastily named new species, but is it not a counsel of 

 perfection to urge the student of Argynnids " to secure a large series of 

 species from every locality," for is not every few miles in eveiy direction 

 a separate locality? 



Mr. Snyder reduces the number of supposed species from 64 to 57, 

 and increases the number of supposed varieties from 10 to 15, but the 

 only names which he strikes out of the list are Macaria, which he states 

 is a synonym of Eurynome, and Opis, as a synonym of Clio. 



Cipris and Alcestis are placed as varieties of Aphrodite and Bischoffi j 

 Artonis and Clio are finally referred as forms of Eurynome. 



Arge is listed as distinct, but is said to intergrade with Eurynome. 



Electa is erroneously given as Electra. 



Mr. Snyder groups the forms in six groups, which he designates as 

 follows : 



Diana group, Monticola group, Edwardsii group, Semiramis group, 

 Eurynome group, and Myrina group, the latter embracing all those which 

 have been placed in the genus Brenthis, along with Astarte, Doub.-Hew. 



This grouping is followed by notes on the individual forms, but the 

 whole paper shows that much more knowledge is needed before a really 

 satisfactory revision of the very difficult North American forms can be 

 made. H. H. L. 



Mailed October 2nd, 1900. 



