47 
Pl. dyaus, Grote. 
This species appears to be closely related on one side to verruca and 
on the other to precationis. The ground color is a pale lilac-brown 
with a tinge of gray. The front wings are marked, especially on the 
middle portion, with a strong bronze or golden luster; between the 
large veins near the base a pale, orbicular, silvery spot; the usual 
metallic or silvery spots on the disk small, but distinctly separated 
from each other, the outer or posterior one orbicular; the inner or an¬ 
terior in the form of a U, with the inner limb the longer, the inte¬ 
rior space fulvous, this fulvous portion extending obliquely forward 
to the costal margin; the outer transverse line separating the middle 
and outer third of the wing, sinuous, bordered outwardly, on the outer 
and inner portion by lilac-gray; the inner margin of the middle portion 
bordered by a strongly golden-tinted space; the outer margin, along 
the base of the fringe, marked by a straight, slender, pale lilac line; 
the fringe lilac-gray, slightly mingled with brown. Posterior wings 
pale lilac, with fuscous shading, darkest toward the outer angle, with 
pale fringes. Underside ochreous, the hind wings with two dull fus¬ 
cous lines. Collar and face of dorsal tuft olivaceous. 
It evidently approaches very near to precationis , hut the metallic 
spots are silver}? - instead of golden, the hook or U-mark more rounded 
at the angle; it is a little smaller apecies, paler and of a less distinct 
purplish tint. Expanse 1.35 inches. 
Pl. precationis, Guen. 
The front wings and thorax of a deep purplish-brown color. The 
inner transverse line, which marks the division between the basal and 
middle area, is formed by a slender thread of golden scales, obliter¬ 
ated toward the costal margin, the outer transverse line indicated by 
a narrow purplish shading, with a strong forward bend opposite the 
outer metalic spot; the fringe, which is pale lilac, is preceded by a 
very slender, pale inner and then by an outer, black marginal line, 
and is interspersed with black; the darkest portions of the wings are 
the space around the metalic spots and the interior portion of the 
outer area (considering the wings as spread), The metalic spots have 
more of a golden hue than those of the species heretofore described, 
they ‘are also distinctly separated and prominent; the outer or pos¬ 
terior, ovoid; the inner or anterior, when seen from the base of the 
wing, resembles an interregation point (?) but seen from behind when 
the wings are spread, resembles an Italic v , the open part turning for¬ 
ward and inward. The posterior wings dark uniform fuscous, with a 
coppery luster. Under side dull ochreous, somewhat dusky; the pos¬ 
terior pair crossed by three fuscous lines, two of which are partially 
visible on the anterior wir 's. The anterior part of the collar a bright 
red. Expanse 1.50 inches. 
The ground color of this species resembles very closely that of bi- 
loba , but the wide difference in the metalic spots and larger size of 
the latter readily distinguish it. The metallic spots of precationis , 
dyaus, ou and brassicce somewhat closely resemble each other in size 
and shape, but other differences sufficiently distinguish them from 
each other. 
