163 



he saw several at the same time but not knowing that they 

 would be of any especial value, he took only the two. The species 

 will be found abundantly in some parts of Montana, and probably in 

 Brit. Am. It lies between Indra and Brevicauda. The latter has 

 the abdomen marked by rows of yellow spots, subdorsal and lateral 

 (4 in (5 6 in $ ), as in Asterias. Nitra has only a lateral stripe running 

 from base of wing to last segment. Indra has not even all of this, but 

 the stripe is restricted to the two segments before last. In Indra the 

 spots of mesial band on hind wing are run together, and the band is 

 square-edged on basal side ; in Nitra the spots are widely separated, 

 and the inner edge is not straight, and is shadowy, as in Bairdii. The 

 species is very distinct. As the allied species has been named Indra, 

 I call this Nitra, another appellation of "the Shining One." 



CoLiAs Hagenii. 



Male. — Expands 1.5 to 2 inches. 



Upper side pale sulphur yellow, sometimes with an ochraceous tint 

 throughout ; the marginal borders broad, erose within, cut nearly to 

 outer edge by the yellow nervules ; discal spots of primaries small, 

 suboval, black ; of secondaries, bright orange ; fringes pale roseate, 

 yellow about inner angle of primaries and outer of secondaries. Under 

 side pale yellow, very slightly dusted over costal margin of primaries 

 and all of secondaries with fine dark scales ; discal spot of primaries 

 double-convex, black, with white or yellow inside, on which are a few 

 rosy scales ; a sub-marginal series of brown points, but often 

 none at all ; discal spot of secondaries pearl-white, with a few roseate 

 scales (sometimes the spot is all roseate), in pale ferruginous ring, 

 sometimes duplex ; at outer angle a slight patch, often a mere streak 

 of reddish ; a submarginal series of rosy or reddish points, often 

 wholly wanting ; at base a small roseate patch. 



Female. — Expands from 1.6 to 2 inches. 



Upper side green-yellow, more often a deep yellow, running to- 

 wards ochre, and orange-ochre; of 24 examples now under view, 14 

 have this deep yellow hue decidedly ; the marginal borders of both 

 wings very broad, on primaries enclosing a series of large, yellow, well- 

 defined spots, wanting in upper median inteYspace; on secondaries this 

 border extends from one angle to the other, and is broad enough to 

 nearly enclose a series of yellow spots; in others the border but parti- 

 ally encloses the spots, which therefore are not defined ; occasionally 

 the border is narrow (2 instances out of 24), and one example shows 

 merely a sprinkling of black scales about outer angle. The under side 

 is either pale yellow or greenish over secondaries and apical area of pri- 

 maries, and the markings are variable as in the male. From 20,324$ 

 from various localities, from So. Colorado to Montana and Dacotah 

 (Bismarck). 



This species is nearer to Eurytheme than to Philodice, in the imago 

 as in the larva. The broad border of hind wing, enclosing yellow 

 spOts, is a usual feature of the former, but very rare in Philodice. Add, 



