GONEPTERYX. 
G5 
Fab., by Dr. Leacli to form the genus Goneptcrijx, wliicb certainly 
has the preference over Boisduval’s Ilhodoccra, so generally adopted 
by continental entomologists, including Standinger. 
The Larvse have the same shape as those of Colias, but the 
Pupae differ in having the wing-cases very large and forming 
a conspicuous bulging mass. This form of pupa is seen in some 
of the allied exotic genera. 
1. G, Rhamni, Linn. Faun. Suec. p. 272 (1761); Syst. Nat. 
1, 2, p. 765. Esp. Schmet. t. 1, t. 4, f. 4. Hiibn. I. 
f. 442-44. Boisd. Sp. Gen. 1, p. 602. 
Expands from 2’25 to 2’50 in. The male has all the wings 
with a sharply projecting angle and of a bright greenish yellow 
colour, with an orange discoidal spot on each wing. Under side 
yellower; the hind wings have the discoidal spot pearly in the 
centre. The female is somewhat larger than the male, and of a 
lighter colour, being whitish, but otherwise resembling it. Head 
and antennse dull red ; body black, covered with white silky hairs ; 
legs light yellow. PI. XIV., 4. 
Times of Appeakance. — From the end of July till October, 
and in the spring after hybernation ; thus the butterfly is on the 
wing during the greater part of the year. 
Habitat. — The greater paid of Europe, excepting the Polar 
Regions. As a British insect it is generally common, but is local 
in Ireland, and very rare in Scotland. 
Laeva cylindrical, or rather slightly thicker in the middle 
segments than at the extremities ; it is of a dull apple-green, 
covered with minute excrescences from each of which grows a 
minute white hair. A lateral white waved stripe runs through the 
whole length of the body. PI. XVI., 4. 
Pupa bright green, pointed at both ends, thicker in the dorsal 
thoracic region, the wing-cases forming a considerable round- 
shaped projection ; the cephalic and thoracic parts are shaded with 
purplish brown. 
Food-plants, Ehamnus frangula and R. catharticus. The eggs 
are laid by hybernated females in April ; the larva emerges early 
K 
