Early Stages.—Unknown.
The species has thus far been found only in Florida.
(10) Thanaos horatius, Scudder, Plate XLVIII, Fig. 15, ♂ (Horace's Dusky-wing).
Butterfly.—Smaller than T. juvenalis, which it resembles in the long transverse series of translucent spots. It is, however, paler on the upper side of the wings, and more profusely mottled on the hind wing both above and below, though there is considerable variation in this regard. Expanse, 1.65 inch.
Early Stages.—The caterpillar probably feeds on the Leguminosæ. We know very little about the life-history of the species.
The butterfly ranges from Massachusetts to Texas.
(11) Thanaos nævius, Lintner, Plate XLVIII, Fig. 3, ♁ (Nævius' Dusky-wing).
Butterfly.—This insect is closely allied to T. petronius, but the translucent spots on the fore wing are smaller, and there is generally a light spot near the costa before the three subapical translucent spots.
Early Stages.—Unknown.