THE CANADIAN ENTOMOLOGIST. 89 
ing to brownish golden, tinged with purple and topaz red, with the changes 
of the light; on the costa are three indigo or violet-blue streaks, the first 
and second oblique, the third straight ; the first is the longest, and placed 
about the basal third of the costa ; the third is before the ciliæ. Near the 
base, upon the disc, is a short, very oblique streak of the same hue, point- 
ing towards a small spot of the same hue placed within the dorsal margin 
at about the basal fourth; on the disc, almost between the points of the first 
and second costal streaks, is a minute spot of the same hue, and before it, 
near the dorsal margin, is a very short longitudinal spot of the same hue, 
and almost in a line with the first costal streak ; two other small spots of 
the same hue situated behind the two last named, form, with them, a 
trapezoid ; four small spots of the same hue around the apex, each situated 
between two of the apical veins. All of these streaks and spots vary 
with the light, through purple, crimson and topaz red. Ciliz metallic, 
with two wide, hinder, marginal lines of the general hue; legs of the 
‘general hue, with the tibiæ tipped and the tarsiannulate with white. Alar 
ex. 7, inch. Kentucky. Common. 
This is one of the most exquisite little gems that I have found among 
the “Micros.” It evidently bears a very close resemblance to S. zridz- 
pennella Clem., (which, however, is unknown to me) and if Dr. Clemens’ 
description could be supposed to be imperfect, it might be the same 
insect. But I cannot recognize it in his description. He says that the 
first costal streak in 5S. zrzdipennella is placed about the middle of the 
wing, instead of about the basal third, as in this species. In 3S. rédipennella 
the third costal is oblique ; in this species it is straight. He mentions 
only one spot near the base, instead of two, and he says that zdipennella 
has “three spots beneath the second costal streak, one in the fold and 
two in the middle of the wing,” instead of the four forining the trapezoid. 
These differences will enable the reader to distinguish the species; the 
shape and neuration of the wings is the same in both. In S. emblemella, 
which is unknown to me, Dr. Clemens says that the posterior margin of 
the wings is oblique, and the neuration also differs slightly from that of S. 
tridipennella and this species. 
The larvæ of all the species are unknown. The imagines have a 
curious habit, when they alight upon a leaf, of strutting rapidly about over 
its surface with the wings a little spread, and, as Dr. Clemens says, of 
driving away other ‘‘little people” from their neighbourhood. When 
they finally settle down, however, they are not very easily alarmed. 
