_Caterpillar._--The caterpillar is cylindrical, with the head somewhat smaller than the body, pale yellowish-brown in color, marked with longitudinal dark-brown bands, of which the two upon the side are deeper in color than the one upon the back, which latter is sometimes almost entirely effaced; the base is slaty-black. There are orange spots about the spiracles. There are six rows of black branching spines upon the body, and two similar spines upon the head, these latter somewhat recurved. The feet and legs are black. The caterpillar feeds upon the various species of passion-flower which are found in the Southern States.
_Chrysalis._--The chrysalis is dark brown, marked with a few small pale spots.
This species ranges from the latitude of southern Virginia southward to Arizona and California. It is abundant also in the Antilles and Mexico.
_Butterfly._--Butterflies of medium size, having wings of a yellowish-brown color, marked with black, the under side of the wings devoid of silvery spots such as are found in the genera _Dione_ and _Argynnis_. The palpi have the second joint strongly developed, increasing in thickness from behind forward, and thickly covered with long hair; the third joint is very small and pointed; the antennæ are terminated by a conspicuous pear-shaped club. The cell of the fore wing is closed by a very feeble lower discocellular vein, which unites with the median vein at the origin of the second median nervule; the cell of the hind wing is open, though occasionally there are traces of a feebly developed lower discocellular vein on this wing. The outer margin of the fore wing is slightly excavated below the apex; the outer margin of the hind wing is somewhat strongly produced at the end of the third median nervule.
[Illustration FIG. 88.--Neuration of the genus _Euptoieta_.]
_Egg._--Short, subconical, with from thirty to forty vertical ribs, pale green in color.
_Caterpillar._--The caterpillar is cylindrical, with short branching spines arranged in longitudinal rows upon the body, the spines on the first segment being bent forward over the head. The head is somewhat smaller in the mature stage than the body.
_Chrysalis._--The chrysalis is suspended, marked upon its dorsal side with a number of small angular eminences, with the head and the ventral side evenly rounded.