. The butterfly book; a popular guide to a knowledge of the butterflies of North America. Butterflies -- North America. Genus Terias. FIG. 148.—Neura- tion of the genus Te- rias. of the Pierince. The outer margin of the wings is generally straight or slightly rounded, though in a few species the apex is somewhat acuminate. The outer margin of the hind wings is generally rounded, though in a few species it is acuminate. Egg.—Strongly spindle-shaped, pointed and rounded at the base and at the apex, much swol- len at the middle, its sides marked by numerous broad but slightly raised vertical ridg
. The butterfly book; a popular guide to a knowledge of the butterflies of North America. Butterflies -- North America. Genus Terias. FIG. 148.—Neura- tion of the genus Te- rias. of the Pierince. The outer margin of the wings is generally straight or slightly rounded, though in a few species the apex is somewhat acuminate. The outer margin of the hind wings is generally rounded, though in a few species it is acuminate. Egg.—Strongly spindle-shaped, pointed and rounded at the base and at the apex, much swol- len at the middle, its sides marked by numerous broad but slightly raised vertical ridges. Caterpillar.—The caterpillars are small, relatively long, cylindrical, with the head quite small, the thoracic segments somewhat larger than the others, giving the anterior portion of the body a slightly humped appearance. They feed upon leguminous plants. Chrysalis.—The chrysalis is compressed laterally, with the head pointed and the wing-cases forming a deep, keel-shaped projection on the ventral side, more pronounced than in any other genus except Catopsilia. There are an immense number of species belonging to this genus scattered through the tropical and subtropical regions of both hemispheres. Many of the species are dimorphic or poly- morphic, and much confusion has arisen, especially in relation to the Oriental species, on account of the great tendency to the pro- duction of seasonal varieties, many of which are strikingly differ- ent from one another. (1) Terias gundlachia, Poey, Plate XXXVII, Fig. i, $ (Gundlach's Sulphur). Butterfly.—This species is easily recognized by the orange- yellow tint of the upper side of the wings and the sharply pointed hind wings. Expanse, inch. Early Stages.—We know nothing of these. The species is found in Texas, Arizona, Mexico, and Cuba. (2) Terias proterpia, Fabricius, Plate XXXVII, Fig. 2, $ (Proterpia). Butterfly.—Even deeper orange than the preceding species. The hind wings are, however, less pointed; the vei
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