THE CANADIAN ENTOMOLOGIST. 12' 



The type which was generously presented to me by Mr. Heath, after 

 whom it was named, is deposited in the United States National Museum 

 at Washington. The painting from which the figure in the plate was made 

 is in my own collection. 



Lyc^na pseudargiolus, Bd.-Lec, var. argentata, n. var. (The 



Manitoba Blue.) 



The beautiful variety of the common Spring Blue butterfly figured 

 herewith is the prevailing form in Central and Southern Manitoba, where 

 it has usually been named by collectors var. neglecta. From this latter, 

 however, it differs in having the black marks of the under side less 

 distinct, in some specimens these are almost entirely obliterated so as to 

 present a clear, nearly unspotted, surface of silvery white. The illustration 

 given herewith does not quite represent the colour of the under side, 

 rather too much of the red pigment having been used, which gives it a 

 warm tint not seen in nature. The shade of blue of the upper surface in 

 both sexes is, as a rule, paler than in other forms (or varieties) of 

 pseudargiohis. In the females the discal area of primaries is silvery 

 white, with a blue reflection and a more decided flush of blue at the base. 



Described from i8 specimens (12 males and 6 females) collected at 

 Cartwright and other places in Southern Manitoba, as well as in south- 

 eastern Assiniboia. The types of both sexes are deposited in the U. S. 

 National Museum at Washington. 



Lyc/ena pseudargiolus, Bd.-Lec, var. nigrescens, n. var. (The 



Kaslo Blue.) 



An interesting variety of Z, psendai-g'lolus has been sent to me by 

 Mr. J. W. Cockle, from Kaslo, on Kootenay Lake, British Columbia, 

 where it is in the common spring form. The most conspicuous difference 

 between this and the other described varieties of the stem species, is the 

 large amount of black on the upper surface of the females. This 

 darkening forms a wide black border on the costal and outer margins of 

 primaries, and spreads over the whole surface of the secondaries, which 

 merely show a little blue on the folds between the veins. The blue of the 

 disc of primaries is a dark purplish-blue, as in var. piasiis, and is 

 frequently irrorated with black scales. The upper side of the male is a 

 deep rich violet-blue, almost of the same shade as in amyntula. The 

 under side of this variety is remarkable, and specimens of both sexes may 

 be found which, if the under side alone were seen, might be referred to 

 neglecta, vio/acea, hicia or marginaia, and some even combine characters 



