Genus Terias 
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 fig. 148.— Neura- 
the body a slightly humped appearance. They tj p n of the genus TV- 
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. 1, $ 
(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, 1.80 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 orartge than the preceding species. 
The hind wings are, however, less pointed; the veins and ner- 
vules are black at their ends, and the costal margin of the fore 
wings is evenly bordered with black, which does not run down 
on the outer margin as in T. gundlachia. Expanse, 1.50-1.75 inch 
295 
