﻿BUTTERFLIES OF THK, CHILTERNS. 211 



P. icarus and C. jtlilceas are of course common. Thecla nihi 

 is also fairly common in certain places. 



PlERID^. 



Under this family I have very little to record. A single 

 specimen of Colias edusa was seen in August, 1900 : apart from 

 this I do not remember seeing any CoUas. G. rliamni is abun- 

 dant ; dates when first noticed in spring are: — April 20th, 1901 

 (in numbers), April 13th, 1902, April 12th, 1905, April 16th, 

 1906. Nothing specially noted concerning E. cardamines, Pieris 

 hrassiccE, or P. najn. Dates when P. rapa was first noticed in 

 spring are:— April 22nd, 1901 (several), April 13th, 1902, April 

 16th, 1906. 



NYMPHALID.E. 



I have never seen any Fritillaries in this district. This may 

 be due to my never having been at suitable places at the right 

 time ; but, considering the frequency of my visits in most 

 seasons, my intimacy with the details of the country, and the 

 abundance of flowers, it is hard to understand how the larger 

 kinds, at any rate, could have been overlooked, and their 

 absence has always seemed to me unaccountable. 



P. atalanta* — This species is present, but I have never seen 

 it in great profusion. (My only written record is of seeing a 

 very perfect specimen on July 30th, 1900.) 



A. urticcBis common, and specially noticeable in early spring. 



E.-polychloros. — One seen, April 22nd, 1901 ; one seen, April 

 13th, 1902 ; two captured between August 16th and August 

 24th, 1902. 



V. io. — Fairly common. Dates when first noticed in 

 spring :— April 15th, 1905, April 16th, 1906. 



Satyrid^. 



P. megmra. — Mr. Eowland-Brown writes that this species 

 has become very scarce in the central part of the Chilterns, and 

 Mr. Bussey Bell calls it "quite scarce along the hills." My own 

 experience tallies with these statements, for I have no record of 

 its occurrence in my district. But as soon as one descends from 

 the escarpment on to the lower lands and different soil to the 

 north-west, this butterfly appears. Thus I saw it near Walling- 

 ford on August 20th, 1915, and Mr. Eowland-Brown tells me he 

 found it common near Moulsford in September, 1902. 



P. egeria var. egerides. — Moderately common. 



M. galatea. — A considerable number of specimens were pre- 

 sent on one of the flowery hillsides described above in July, 

 1899, and I have noticed others in the same place on subsequent 

 occasions, but without recording the dates. 



=<= From August 13th till August 26th, 1915, I have not seen a single 

 P. atalanfa iu the Henlev district, but V. io is fairlv abundant. 



