Drake, The Culprit Fay.
This subfamily falls into two groups:
Group A.—In this group the cell of the fore wing is always more than two thirds the length of the costa; the lower radial vein lies approximately equidistant between the third median nervule and the upper radial. The hind wing is frequently produced at the extremity of the submedian vein into a long tail or tooth-like projection. The fore wing is usually furnished in the male sex with a costal fold, but is never marked with a discal stigma, or bunch of raised scales. The antennæ always terminate in a fine point and are usually bent into a hook. The butterflies when at rest, for the most part, hold their wings erect, though some of them hold them extended horizontally.
Group B.—In this group the cell of the fore wing is less than two thirds the length of the costa, and the lower radial is always emitted from the end of the cell near the upper angle, much nearer to the upper radial than to the third median. The hind wings are often somewhat lobed at the anal angle, but never produced as in the first group. The antennæ are very seldom hooked.
Genus EUDAMUS, Swainson
Butterfly.—The antennæ terminate in a fine point bent into a hook at the thickest part of the club. The cell of the fore wing is very long. The discocellulars are inwardly oblique and on the same straight line, the upper discocellulars being reduced to a mere point. The lower radial is equidistant between the upper radial and the third median nervule. The hind wing is without the lower radial and is always produced into a long tail.
Egg.—The egg is more nearly globular than is true in most of the genera, but is strongly flattened at the base and is marked with a number of transverse longitudinal ridges, somewhat widely separated, between which are finer cross-lines. The micropyle at the summit is deeply depressed.
Caterpillar.—The caterpillar is cylindrical, tapering rapidly from the middle forward and backward. The head is much larger than the neck and is distinctly bilobed.
Chrysalis.—The chrysalis is provided with a somewhat hooked cremaster, is rounded at the head, humped over the thorax, and marked on the dorsal side of the abdominal segments with a few small conical projections. The chrysalis is formed between leaves loosely drawn together with a few strands of silk.
This genus is confined to the tropics of the New World, and is represented in the extreme southern portions of the United States by the species figured in our plate—E. proteus.