THE CANADIAN KXTOMOT.OCilST. 155 



contrast to the conditions in Soutliern Michigan, where the form of the 

 female without any yelbw is the usual one, the intergrades with varying 

 amounts of yellow coming next and those with the nearly complete band 

 occurring comparatively rarely. The bright effect in those specimens of 

 florus with the yellow predominating is heightened by an extension of the 

 line of orange crescents from anal angle along the outer border ; three, and 

 sometimes four, well-marked crescents in such cases may be counted. In 

 typical dorcas from Southern Michigan these crescents are practically 

 obliterated, and \n florus reduced to one or two, rarely three. 



A form of the female which had not previouly been met with was 

 found in the Waucedah habitat. There were seven examples collected, 

 two of which are particularly noteworthy. In these, the ground colour is 

 of a uniformly lighter shade of brown than in the ordinary form, the entire 

 surface of both wings is more or less stippled with a darker brown, the 

 black dots are less conspicuous because of the stippling, the orange 

 crescent at the anal angle is nearly obsolete, and the yellow on the fore 

 wings is merely indicated. The other five present these differences less 

 prominently and grade into the normal form, but four of them exhibit 

 more or less of the yellow oi florus. None of the males show any note- 

 worthy variations, but I might add that I have one male from Oakland 

 County in which there is a slight stippling in the darker, outer portion of 

 the hind wings. 



The distribution of epixauthe in Michigan is virtually unknown, 

 except as it may be partially inferred from the presence of cranberry bogs, 

 in the vicinity of which it occurs. Personally, I believe it will be found 

 at many points in the State, both north and south. A number of years 

 ago this species was reported from (irand Rapids,* but evidently in error 

 for dorcas. It has also been stated as occurring on Isle Royale, but this 

 again appears to be a doubtful record. The late Dr. Fletcher, quoted in 

 the 1909 Isle Royale Report, says oi epixanthe :\ 



"This is the only species I have some doubts about. There is no 

 doubt that some of the records oi epixanthe should be of the rare and 

 little-understood species dorcas, which occurs in the Lake Superior region 

 and into Manitoba. It-is easily distinguished irom epixa/if//e hy its slightly 

 larger size and the brilliant orange wash on the under surface. Epixantlie 



*Robt. H. Wolcott : Butterflies of Grand Rapids, Mich., Can. Ent., Vol. 

 XXV, p. 103. 



tAn Ecological Survey of Isle Royale, Lake Superior, Clias. C. Adams, igoq. 

 Published as part of the Report of the Board of Geological Survey of Michigan 

 for 1908, p. .274. 



