Butterfly.—The head is moderately large; the eyes are not prominent, hairy; the antennæ are about half as long as the costa of the fore wing, not distinctly clubbed, gradually thickening toward the extremity. The palpi are slender, compressed, hairy below, with the last joint rather short and pointed. The fore and hind wings are evenly rounded on the outer margin. The costal vein of the fore wing is thickened, but not greatly swollen. The first and second subcostals are emitted well before the end of the cell, the third beyond it, and the fourth and fifth from a common stem, both terminating below the apex. The upper discocellular vein is wanting, and the upper radial, therefore, springs from the upper angle of the cell of the fore wing.
[a]Fig. 115.]—Neuration of the genus Satyrodes. (After Scudder.)
Egg.—Flattened spheroidal, broader than high, flat at the base and rounded above.
Caterpillar.—The head is full, the summit of either half produced upward and forward into a slender, conical horn. The body is nearly cylindrical, tapering backward, the last segment furnished with two pointed, backward projections, resembling the horns of the head.
Chrysalis.—Relatively longer and more slender than in the preceding genus, with the thoracic prominence more acute and the head more sharply pointed.
This genus was erected to receive the single species which, until the present time, is its sole representative.
(1) Satyrodes canthus, Boisduval and Leconte, Plate XXV, Fig. 1, ♂; Plate III, Fig. 9, larva; Plate IV, Fig. 9, chrysalis (The Common Grass-nymph).
Butterfly.—It always haunts meadows and hides among the tufts of tall grasses growing in moist places. It is rather common in New England and the Northern States generally. It is found in Canada and is reported from the cool upper mountain valleys in the Carolinas. It has a weak, jerking flight, and is easily taken when found. Expanse, 1.65-1.90 inch.