184 . THE ENTOMOLOGIST. 



not been "caught here for the last five or six years. I have 

 exammed many collections of butterflies, but have only seen one 

 other example of this variety, which was taken near Gatchina in 

 1888, the same year that I took the example described above at 

 om* comitry residence some fifteen versts (about ten miles) south 

 from the town Louga, and not more than sixty or seventy versts 

 (about forty-five or fifty miles) from Gatchina. My specimen 

 has been presented to the zoological collection of the Imperial 

 University of St. Petersburg, where a complete collection of 

 butterflies of our Government is now formed by a number of 

 students of the University. A list of all the Lepidoptera in this 

 collection will shortly be published. 



I should also like to record the occurrence of two other 

 species of Ehopalocera in the Government of St. Petersburg, i. e., 

 Parnassius mnemosyne and Polyommatus dispar var. rutilm. The 

 former of these two butterflies is widely spread over Russia. 

 Beginning from Finnland, it goes down the Volga. Almost all 

 collections from St. Petersburg contain some specimens of this 

 species, but it is nevertheless very local, and is generally found 

 on high river-banks. For instance, in the neighbourhood of 

 Louga there are only three or four places where it is to be found, 

 each year about the 1st of June. From a distance this butterfly 

 may be easily mistaken for Aporia cratagi, which is very plentiful 

 with us, and appears about the same time of the year. 



The other butterfly, Polyommatus riUilas, was caught by 

 myself for the first time in the Government of St. Petersburg, on 

 our estate near Louga, on the 12th of July, 1892. This in-- 

 teresting specimen I have also handed over to the collection of 

 the University. 



I may mention that the following species of Lepidoptera, all 

 of which were found by me, have been also added to the fauna 

 list of St. Petersburg within the last three years : — Apatura iris, 

 Macroglossa stellatarn.m, Spilosoma luctifera, and Brotolomia meti- 

 culosa. The first of these, Apatura iris, was caught once in 1837, 

 if I remember rightly, but since then supposed to be extinct in 

 St. Petersburg. In the year 1890, towards the end of June, a 

 great number of this species appeared on our estate, but no- 

 where else ; my best specimens are in the University collection. 

 Pieris dajjlidice occurred in 1892 all over the Government, but 

 until this it had never been observed with us. It was as plentiful 

 as Pieris hrassicce and P. rapce usually are. 



St. Petersburg University, Jan. 30, 1894. 



