140 THE ENTOMOLOGIST. 



The Rhopalocera of the Wye Valley. — The following is a list of 

 the Diurni I have observed in the Wye valley, seven miles below 

 Builth, and within a radius of five or six miles from Erwood Station, 

 Cambrian Railway. The geological formation is Silurian and Old Red 

 Sandstone, and the country is well wooded. 



Argynnis paphia. Fairly common. — A. aglaia. A few occur every 

 year, but it is far from common. — A. adippe. Much the commonest 

 of the three larger fritillaries. All three occur more commonly than 

 anywhere else in the district, in a sloping ferny wood near the water- 

 fall of Graig-y-pwl-ddhw. — A. euphrosyne. Common everywhere. One 

 season a few years ago they swarmed and were unusually large and in 

 fine condition. — A. selene. Fairly common. 



Melitcea artemis. Very rare. I have only seen it in the corner of 

 one meadow, and that was some years ago. 



Grapta c-album. Occurs every year in fair numbers, both in the 

 autumn and in spring, after hybernation. 



Vanessa urticce. Our commonest butterfly ; I have seen it flying in 

 the sunshine in almost every month of the year. It seems to sooner 

 awake from its winter sleep on a fine sunny mild day than any other 

 kind. — V. antiopa. I once saw some years ago a specimen of this 

 beautiful insect at rest on a flower on the railway embankment near 

 Abererch station. I was quite close, and am perfectly certain what it 

 was. Unfortunately I had no net, and was unable to capture it. — 

 F. io. Not very common. 



Pyrameis atalanta. Commoner than the preceding. — P. cardui. 

 Very uncertain ; some years plentiful and then hardly a specimen is 

 seen for two or three seasons. It has been very scarce lately. 



Pa rarge megmra. Plentiful and fine. 



Satyrus semele. Rare. 



Epinephele ianira. Very abundant. I once took a female whose 

 under wings were perfectly white, as if bleached.— E. tithonus. Plen- 

 tiful. — E. hyperanthes. Only occurs in one wood, and sparingly there. 



Ccenonynipha pamphilus. Very abundant. 



Thecla qnercus. Very rare, except in the Jubilee year, 1887, when 

 they fairly swarmed round the top of some oak-trees in the wood near 

 Craig-y-pwl-ddhw. They flew so high it was difficult to take them, but 

 by tying my net to the bottom joint of a salmon-rod I got a nice 

 series. — T. w-album. I have twice taken this insect. 



Polyommatus phlwas. Common. A few years ago it seemed to be 

 getting scarce, but of late it has been numerous again. 



Lyccena icarus. Very abundant.— L. argiolus. Common about 

 holly-trees in spring. 



Colias edusa. Is seldom seen, but in years in which it is plentiful 

 in England a few specimens generally come our way. 



Rhodocera rhamni. Very rare. 



Anthocharis cardamines. Very abundant, and varies greatly in size. 

 I have taken some very small specimens. 



Pieris rapes. Abundant. — P. napi. Common. — P. brassicce. Not 

 common, and seems to be getting rarer every year. 



Hesperia tages. Common. — H. linea. Fairly plentiful. — J. W. 

 Vaughan; The Skreen, Erwood, R.S.O., Radnorshire, May 11th, 1898. 



