PARNASSIUS I. 
Glarius, is also a mountain species. Clodius, so far, lias only been found 
on low ground near the sea coast. 
Until witbin a few years this genus was supposed to be restricted to tbe 
old world and to contain but a small number of species, scarcely more than 
have already been found in North America. They mostly inhabit high mountain 
regions, the Alps, Caucasus, Himalaya, the mountains of Siberia and China, and 
recent expeditions have revealed the existence of many new species. 
Parnassius is considered to form the connecting link between the Papilios 
and the Pieridae, partaking of certain characteristics of both, yet presenting others 
quite anomalous. The larvae are furnished with the Y shaped tentacle on second 
segment which is found in all the Papilionidae and is peculiar to them, but in 
other respects resemble the larvae of the Hesperidae or of certain moths. So also 
does the chrysalis, which, instead of being naked and suspended by a single 
thread around the middle of the body as in the Papilios and the Pieridae, is en- 
veloped between leaves in a slight silken web supported by several threads. It 
is moreover cylindro-conical in shape and is covered by a bluish powder as in 
the moths of the genus Catocala. The butterfly, in general appearance, resembles 
the Pieridae as it does also in the palpi and antennae. Unlike any other lepidopte- 
rous insect the extremity of the abdomen of the female is provided with a corneous 
appendage, taking the form of a large, open pouch as in Clarius or of a small 
keeled pouch as in JVomion and Sayii. The larvae of the European species feed 
upon species of saxifrage and sedum and probably those of the American species 
will be found upon similar plants. 
