PHORODESMA BAJULARIA. 59 
About the middle of August one of my larva had so 
far outstripped the rest in growth that I sent him to 
Mr. Buckler, who, having first depicted him “dressed,” 
with a great deal of trouble pulled off all his cover- 
ings, and took a second figure of him ‘naked ;”’ after 
this there was no attempt to replace the lost dress, 
but, after feeding a few days longer, by the end of 
August the larva changed into a pupa, without any 
covering or fastening whatever. All the rest of my 
larvee are now feeding very slowly, and will probably 
hybernate when about halt-grown. 
If the oak leaves supplied to them are tender, I 
notice they are eaten in the usual way, but the harder 
and drier leaves are turned into skeletons, all the net- 
work of ribs and veins being left untouched. 
I must conclude with saying that I cannot call the 
head of this larva bifid; in this point it differs from 
all the other British Geometride. (John Hellins, 
September 9th, 1865; H.M.M., October, 1865, II, 
114.) 
PHORODESMA SMARAGDARIA. 
The eggs of Geometra smaragdaria are laid in July 
on the stems and leaves of Artemisia marituma, gener- 
ally near the top of the shoots. When first laid they 
are of a light yellowish colour, changing in about a 
fortnight to dark greyish, soon after which the young 
larvee emerge, and immediately cover themselves with 
minute portions of their food-plant, which they attach 
to their bodies with some glutinous secretion so 
firmly that it is very difficult to remove them. It 
seems a matter of great importance to these larvee 
that they should so cover themselves; for a few eges 
laid by a female which I had temporarily placed in a 
chip-box, being firmly attached to the side of the box, 
were left there until they hatched, when the young 
larvee, having no Artemisia to operate upon, appro- 
