36 



Atethmia pampina, Gn. 



According to our notes the type localities are N. Y,, and Balti- 

 more, Md. The specimen which Dr. McDunnough compared with 

 type is from Hymers, Ontario, and is somewhat paler than the average 

 Eastern specimens. However, the species shows considerable variation 

 and some Eastern specimens match it fairly well. 



A smooth, pale looking female received from Mr. H. D. Merrick, 

 (New Brighton, Pa.) has the wing margins entire, not cremilate, thus 

 showing a close affinity to species of the genus Parastichtis ; and to the 

 European species of Atethmia which appear to have somewhat less 

 crenulate outer margins to the primaries than in our normal Eastern 

 pampina. 



From Northward and Westward of the original type localities, 

 the specimens received appear gradually lighter. The Alberta and 

 Manitoba specimens showing a much greater range of variation than 

 is to be found in Eastern material. A small series from Calgary are 

 somewhat smoother and paler looking, representing what we consider 

 about the limit in this direction for the Eastern form ; some Pennsyl- 

 vania and A-Iassachusetts specimens matching them fairly well. Mani- 

 toba produces forms which range from very pale to as deep a 

 color as the average Eastern specimens. British Columbia material 

 greatly resembles some of these. 



The paleness of these slightly different Western races reaches 

 its apex in Colorado ; and following Dr. Staudinger's work on the 

 European species and forms, we give this extreme form a name. 



Atethmia pampina race glenwoodi, nov. 



Ground color of the primaries pale luteous, tinged with some rufous. 

 Maculation as in the Eastern pampina, but fainter, not as contrasting with the 

 ground. The ordinary spots are somewhat darker than the ground but not con- 

 spicuously so. The deeper colored, semiquadrate patch between the t. a. and t. 

 p. lines below the submedian fold usually prominent in pampina is scarcely 

 represented in the Colorado race altho, upon very close observation, a slight 

 darkening due to a few rufous scales becomes visible. The thorax and abdomen 

 are pale luteous instead of the deeper color found in pampina. 



Type locality: Glenwood Springs, Colorado; Wm. Barnes, Collector. 



Number and sexes of types: $, Holotype, Oct. 1-7; 9, Allotype, Oct. 

 16-23; 3 $,4 9, Paratypes as follows: $'s, Oct. 1, 1-7, 8-15; $'s, Sept. 8-15, 

 Oct. 8-15, 16-23, and one undated. 



