92 
Psyche 
[Sept.-Dee. 
easily allows the eye to sort out the u ar gyro gnomon” and the 
“ scudderi ” specimens. Genitalically they do represent these two 
species but the twofold variation mentioned is shared by ex- 
amples of structural argyrognomon and structural scudderi in 
such a way as not to correspond to the definite specific differ- 
ences in the valve and the falx; so that not only are they 
inseparable by the shuttling external characters, but all the ex- 
amples look as if they belonged on the whole to one “arctic” 
race of one and the same species. Here we put our finger on 
something very like the actual evolution of scudderi from argy- 
rognomon, and I have discovered an analogical case in the 
Palearctic, where cleobis kenteana Staudinger, 1892, ( ?ida 
Grum Grshmailo, 189 1) 5 is linked up with a most interesting 
(undescribed) “black” form of argyrognomon from North- 
Eastern Asia. Otherwise, throughout their nearctic distribution 
wherever a scudderi form comes from the same locality as an 
argyrognomon one, both series are correctly separable at a 
glance. On the other hand in the case of forms from widely 
separate regions, such as the distinctly marked Glacier Pt. form 
of argyrognomon anna and the ridiculously similar talcum white 
underside scudderi from Riding Mts., Manitoba (kindly loaned 
me by Dr. Gertsch of the Am. Mus. Nat. Hist, and by Don B. 
Stallings), the two can be distinguished externally only by the 
wider terminal space in the former. 
Lycaeides scudderi Edwards 
scudderi Edwards. 
The types are lost. The name is precariously poised on the 
brink of synonymity into which it is drawn by the alien aquilo 
female. The type locality is not the vague “Lake Winnipeg” 
as given by Edwards, but the more Western “mouth of the 
Saskatchewan” mentioned by Scudder who took the type speci- 
men there in 1860. I find it just possible however to save the 
name by applying it to the Lycoeides species the organ of which 
was figured by Stempffer in 1933 (from a Brit. Col. specimen). 
Up to now it has been confused by all authors with the Eastern 
subspecies of melissa, Ontario specimens of which Edwards mis- 
identified as his scudderi in 1862 (Proc. Acad. Nat. Sci. Phila- 
delphia 1862:225). 
5 1 question the accepted identity of kenteana Staudinger with Grum Grsh- 
mailo’s ida from Amdo. 
