176 
under the coping and open joints of walls, or old 
buildings, &c. &c. They ai'e transformed into a 
pupa state, and emerge in the spring the jjerfect 
insect, the lesser common White Butterfly, 
(Papilio Napi.) Their eggs are of a cylindrical 
shape, inserted in groups, several in number, on 
the under surface of the leaf, in July and 
August. 
The next one to be mentioned is much larger 
than the one last described. It is about two inches 
long, thinly clothed with hair, its body principally 
yellow, maculated indiscriminately with black 
spots. The principal bulk will have retired by 
the middle of October into crevices of old walls, 
buildings, &c., where they are transformed to a 
pupa, which emerges in the spring months the 
common large Butterfly, (Papilio Brassica), the 
body black, w'ings chiefly white, with the excep- 
tion only of the upper wings being narrowly bor- 
dered with black, from the apex, or the part 
which unites with the body to nearly the tip-end 
of the wing, where it terminates with a boarder 
indiscriminately shaped, with two or three small 
black spots on the uppermost wing. The pai’ent 
lays her eggs, which are oval, generally on the 
underside of the leaf of any of the Cabbage tribe 
in July, which in a week or two burst forth into 
animation. 
It appears remarkable that when we examine 
those tw'o species in their larvse state, at a time 
