Butterflies of Bulgaria. 189 



180 to 200 species will be found, which compares favour- 

 ably with about 180 in Spain, 200 in Italy, including the 

 islands and Alps, and 200 in Asia Minor. None, however, 

 unless we treat Erchia gorgonc var. rhodo2)ensis as a species, 

 can be considered peculiar to Bulgaria. 



1. Pajjilio machaon, L. 



Not uncommon up to about 4000 feet. 



2. F. podalirius, L. 



A few seen in the low country. Common at Slivno. 



3. Thais ccrisyi, B. 



Mrs. Nicholl took this abundantly at Slivno in the end 

 of May, and also saw it in the Rilska Valley on the west side 

 of the Rilo Dagh, which is the most westerly point where 

 it has yet been found. The Slivno specimens are larger 

 and the females paler in colour than in Asia Minor or 

 the Caucasus. 



4. Parnassius cqjoUo, L. 



Appeared about the beginning of July on dry slopes 

 at about 3000 — 4000 feet, but not so common as in the 

 Alps. The specimens are not in any way remarkable for 

 size or markings. 



5. P. mncmosgne, L. 



Common on meadows near Rilo Monastir at the end of 

 June at about 4000 feet, but not seen in the Maritza or 

 Airandere Valleys. 



6. A23oria crat^'&gi, L. 



Not uncommon at 3000—4000 feet in July. 



7. Pieris rapse, L. 



Common at 3000 — 4000 and seen up to above 5000 

 feet, and showing a great deal of variation. Some of the 

 females might be called mannii ; but, as far as I can 

 judge, this form is nowhere constant, and should be looked 

 on as an aberration rather than a variety. 



8. P. napi, L. 



Rare in the mountains, and not seen below GOOO feet. 



