_Butterfly._--The antennæ moderately long, delicate, terminated in a gradually thickened club. The eyes are naked; the palpi are compressed, only slightly porrect, not densely covered with scales. The neuration is alike in both sexes, the costal and the median veins greatly thickened toward the base. The first and second subcostals arise from before the end of the cell; the fourth and fifth subcostals arise from a common stem emitted from the third subcostal beyond the end of the cell. The cells in both the fore and hind wings are closed. The butterflies are of medium or large size, curiously marked with checkered spots, blue and white, with broad paler shades on the under side of the secondaries. They are rapid fliers and are said to alight on the trunks of trees with their wings expanded and their heads down. When flying they emit a clicking sound with their wings. _Early Stages._--Very little is known of these. The chrysalids are slender and have two ear-like tubercles on the head. This genus is, strictly speaking, neotropical. About twenty-five species have been described from Central and South America, some of them being exceedingly beautiful and rich in color. The two species credited to our fauna are reported as being occasionally found in Texas. I have specimens of one of the species which certainly came from Texas. I cannot be so sure of the other. (1) =Ageronia feronia=, Linnæus, Plate XXIV, Fig. 4, ♂ (The White-skirted Calico). _Butterfly._--Easily distinguished from the only other species of the genus found in our fauna by the white ground-color of the under side of the hind wings. Expanse, 2.50 inches. _Early Stages._--Unknown. This remarkable insect is said to be occasionally found in Texas. (2) =Ageronia fornax=, Hübner, Plate XXIV, Fig. 5, ♂, _under side_ (The Orange-skirted Calico). _Butterfly._--Closely resembling the preceding species on the upper side, but at once distinguished by the orange-yellow ground-color of the under side of the hind wing. Expanse, 2.60 inches. _Early Stages._--Unknown. Like its congener, _A. fornax_ is reported only from the hotter parts of Texas. Genus VICTORINA, Blanchard (The Malachites) _Butterfly._--Large butterflies, curiously and conspicuously marked with light-greenish spots upon a darker ground; wings upon the under side marbled with brown about the spots and having a satiny luster. The third median nervule of the fore wing is very strongly bowed upward. The cells of both wings are open. The hind wing is tailed at the end of the third median nervule. The two first subcostals arise before the end of the cell; the fourth and fifth spring from a common stem which is emitted from the third beyond the end of the cell, as the cut shows. _Early Stages._--We know nothing of these.