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, i. 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 orange 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 

 ontheouter margin as in T. gundlachia. Expanse, 1.50-1.75 inch. 



295 



