104 
LYG/ENIDM. 
have a round discoidal spot similarly surrounded by Avhite, and no 
basal spots ; the bind wings have four spots between the central 
row and the base, two of tbem nearly touching the costa. The 
bases of all the wings are strongly tinged with blue in the male, 
more faintly so in the female. The outermost spots of lower bind- 
marginal row are minutely studded with metallic silvery blue. 
The anterior tibife are furnished with short spines. PI. XXIII., 1. 
Times of Appeaeance. — May to August. 
Habitat. — The whole of Europe (excepting the Eastern 
portion), Asia Minor, Armenia, Persia, and Eastern Siberia. In 
England it is generally distributed, but local, frequenting heaths, 
open places in woods, &c. In Scotland and Ireland it seems 
to be rare. 
Laeva. — “ Bright yellowish green, with the dorsal stripe 
blackish brown, edged with whitish from the beginning of the 
third to the end of the tenth segment The subdorsal stripe 
is visible from the beginning of the third to the end of the eleventh 
segment as a greenish yellow line running between two green ones, 
darker than the ground colour. At the bottom of the sides, along 
the lateral ridge, commencing on the third segment and continued 
round the anal extremity, is a whitish line. Between the dorsal 
and subdorsal stripes, on all the segments from the third to the 
tenth, both inclusive, are faintly paler oblique lines of yellow- 
green, viz., one on each segment sloping downwards and backwards. 
The warts on the twelfth segment are very often suddenly projected 
considerably, and then a circle of fine short hairs is visible on their 
extremities. The surface of the body is also clothed with similar 
hairs The chrysalis is about five lines long, smooth but 
without polish, the tip of the head slightly projecting, the thorax 
rounded, the body plump, curving on the back outwards and 
backwards towards the tip, which is hidden in the caterpillar- skin; 
the wing-cases are prominent, and long in proportion ; it is of a 
dull green tint, with a dark brown dorsal line of arrow-head marks.” 
— Buckler, Entom. Month. Mag., p. 241, March, 1869 (also quoted 
more fully by Xewman, Brit. Butt., p. 119). The Larva feeds on 
vetches, trefoil, and other Lq/iu/m/osrr. 
