PARNASSIUS 1, 



Glarius, is also a mountain species. Clodius, so far, has only been found 

 on low ground near the sea coast. 



Until within a few years this genus was supposed to be restricted to the 

 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 exj)editions have revealed the existence of many new species. 



Parnassius is considered to form the connecting link between the Papilios 

 and the Pieridte, partaking of certain characteristics of both, yet presenting others 

 quite anomalous. The larvoe are furnished with the Y shaped tentacle on second 

 segment which is found in all the Papilionidse and is peculiar to them, but in 

 other respects resemble the larviB of the Hes^^eridie 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 Pieridfe, is en- 

 veloped between leaves in a slight silken web supported by several threads. It 

 is moreover cylindro-conical in shajie and is covered by a bluish powder as in 

 the moths of the genus Catocala. The butterfly, in general ap^^earance, resembles 

 the Pieridaj as it does also in the palpi and autennie. Unlike any other lepidopte- 

 rous insect the extremity of the abdomen of the female is provided with a corneous 

 aj^pendage, taking the form of a large, open pouch as in Clarius or of a small 

 keeled pouch as in Nomion and Sayii. The larvre of the Eurojiean species feed 

 u^^on sj^ecies of saxifrage and sedum and probably those of the American species 

 will be found upon similar plants. 



