164 WYCOMBE BUTTERFLIES. 
on the 1st, when it may be met with sporting over the richly 
adorned hedges in Hollow Lane. Those seen in the early part of 
the year are hybernated specimens, and are often in singularly 
good condition. The eggs are to be found in May on the Buck- 
thorn; the caterpillar is pale green with a white stripe down 
each side. 
Tue Crovpep YELLow (Colias Edusa). Several years ago our 
respected President took fine specimens of this handsome insect 
in a clover field by the Totteridge Road; since then, until the 
summer of 1867, it had disappeared, though Mr. Kennedy, of 
Bradenham, says he saw one flying about in 1866. ‘This last 
year, however, it re-appeared at several places in our immediate 
neighbourhood, as many members of the Society will recollect. 
(See p. 146.) Formerly the butterfly was supposed to appear in 
the country only at intervals of five or six years, but lately it has 
been gradually getting more common, and was very plentiful in 
many places last season. I had the pleasure of taking several at 
Folkestone—no light task, I can assure my readers, for it is very 
strong on the wing, and delights (at least in that neighbourhood) 
to soar up and down the hills and cliffs, which slope at an angle 
of about 50°. In fact, ali three members of this family are very 
rapid flyers, and cannot be overtaken in fair chase across country. 
Great caution and tact are necessary, more especially for Zdusa. 
But the captor is well repaid when successful, for the contrast 
between the broad black border of the wings and the deep orange 
chrome of the middle is very magnificent. The border gradually 
narrows from front to rear; in the female it is chequered with 
lighter orange spots, which the male does not possess. There is 
a black spot near the margin of the front wings, and a large cir- 
cular one of deep orange in the centre of the hind wings which 
are suffused with a delicate green shade. ‘The caterpillar feeds 
on clover and similar plants. A variety of the female occurs, 
haying the ground colour milk white instead of the usual hue. 
Colias Hyale is the species not found in this district: it has 
been taken near Eton. 
Hy. ULLYETT. 
