(7) Terias proterpia (Fabricius), [Plate CX], Fig. 4, ♂ (The Cadmium Orange).
Our figure will enable the student to immediately recognize it. Expanse 1.50-1.75 inch.
Found in Texas, Arizona, and Mexico.
Subfamily PARNASSIINÆ
(The Parnassians).
This peculiar group of butterflies is classed with the Papilionidæ because the internal vein of the hind wings is always wanting, a characteristic of all papilionine genera. The caterpillars are not provided with osmateria, or offensive scent-organs, and pupation takes place upon the ground among loosely scattered leaves which are interwoven by the larva with a few loose strands of silk. The insects are mainly inhabitants of the mountain regions of the northern hemisphere.
Genus PARNASSIUS Latreille
(The Parnassians).
PL. CXI
What has been said of the family will suffice to characterize the genus.
(1) Parnassius smintheus Doubleday & Hewitson, [Plate CXI], Fig. 1, ♂; Fig. 2, ♀ (The Colorado Parnassian).