Pap. Chorinæus, _Fabr._--Pap. Arcesilaus, _Cramer_, Pl. 294, fig. A, B
(male), fig. C, D (fem.); _Stoll’s Supp._ Pl. 6, fig. 1 (caterpillar),
fig. 1, A (chrysalis)--Satyrus Chorinæus, _Godart_.
Finding it impossible to include this insect, owing to its remarkable
form, in any of the genera hitherto proposed, we have been under the
necessity of assigning it a new name. Many of its characters seem to be
quite peculiar both in the perfect and preparatory states. The species
which makes the nearest approach to it is _Satyrus Philoctetes_, but
the differences are considerable, as will be seen by comparing the
adjoining figure with that insect. The costal line of the upper wings
is very much arched, and the hinder margin is strongly falcate. The
external edge of the under wings is likewise falcate posteriorly, and
the anal angle is a little produced; the line from that point runs
somewhat obliquely nearly to the middle of the hinder edge of the
wing, where there is a broad obtuse oblique tail. This outline
forms a broad, somewhat square figure, having perhaps rather a heavy
appearance, but the curves are graceful. The caterpillar is naked, or
covered only with short pubescence, thickest in the middle, and having
two very long hairy appendages at the hinder extremity. The chrysalis
is short, without any conspicuous projections, the abdominal portion
very much incurved.
[Illustration: