86 Alderson: Noles on Chrysopa perla and C. flava. 
The larve pupated July 18th-1g9th, the larval stage lasting 
just ten days. The cocoons were of white silk, like small 
pellets of cotton wool, about 4mm. x 3 mm. One spun up on 
the muslin of the cover, the others amongst the debris at the 
bottom of the jar. I kept the jar in the house during the 
whole of the winter montis, and on May 24th, 1906, I found 
that one imago had emerged. Unfortunately I missed seeing the 
actual emergence, and with the exception of one crippled speci- 
men, which I found afterwards, no further emergences took 
place. 
C. flava.—On July 14th of the same year I obtained ova 
from a wild C. flava. The eggs were laid in a group on 
the lid of the box, the foot-stalks being united by their middles 
into a bundle. The ovum was elliptical and of a bright green 
—the exact colour of the body of the parent. They began to 
hatch on July 20th, emergence apparently taking place from the 
apex of the ovum. There were thirty-nine ova in the group, 
but only a small proportion of these, some eight or nine, 
emerged. The day before hatching two conspicuous brown spots 
appeared, one on each side of the ovum, which were evidently 
the eyes of the embryo. The eggs did not change colour nearly 
so much as in the case of the C. perla. The apex of each egg 
became a yellowish green shortly before the brown spots 
appeared, and both ends and sides became transparent as the 
embryo became more fully formed. After hatching, the larve 
remained perfectly inactive on the ova, and continued so for 
some time. I could not discover what they did during this 
period, but I do not think that they devoured their egg shells. 
On touching them with a camel’s hair brush they at once became 
very active, and once removed from the empty eggs they did 
not return to them, but ran about very quickly. 
The larva is about 2 mm. in length, of a shining transparent 
white, of a pearly lustre; the eyes large and black; the suck- 
ing spears and legs white. The most striking feature in the 
appearance of this larva, in all stages of growth, is that it 
appears divided into three portions : (1) the thoracic segments ; 
(2) first four abdominal segments; (3) last five abdominal 
segments. When very young (1) appears blood-red ; (2) much 
darker red, owing, I suppose, to the intestines showing 
through the transparent skin ; (3) wholly transparent and of a 
yellowish tinge. After a few days the distinguishing marks on 
the head began to appear. They are black, the same as the 
eyes, and are rather like two crescents, placed back to back. 
Naturalist, 
