80 STATES OF INSECTS. (Lgg.) 
in others to protect the unhatched eggs from the voracity 
of the larve first excluded, which would often devour 
them if in their immediate neighbourhood. 
In the disposition of the eggs which compose these 
groups much diversity prevails. Sometimes they are 
placed without order in a confused mass: more fre- 
quently, however, they are arranged in different, and 
often in very beautiful modes. ‘The common cabbage- 
butterfly (Pontia Brassice) and many other insects place 
theirs upon one end, side by side, so as, comparing 
‘small things with great, to resemble a close column of 
soldiers, in consequence of which those larvee which, on 
hatching, proceed from the upper end, cannot disturb 
the adjoining eggs. Many indeed have a conformation 
purposely adapted to this position, as the hemispherical 
eggs of the puss-moth (Cerura Vinula), which have the 
base by which they are gummed membranous and trans- 
parent, while the rest is corneous and opaque. The 
same ready exit to the larva is provided for in the oblong 
egos of the emperor moth (Saturnia Spinz), which are 
piled on their sides in two or more lines like bottles of 
wine in a bin’. 
Where the larva does not emerge exactly from the 
end of the egg other arrangements take place. The 
whirlwig-beetle (Gyrinus natator) and the saw-fly of the 
gooseberry &c. (Nematus flavus) dispose theirs end to 
end in several rows; the former upon the leaf of some 
aquatic grass, the rows being parallel>, the latter gum- 
med to the main nerves of gooseberry or currant leaves, 
the direction of which they follow *. 
But the lackey-moths (Tvrichoda Neustria, castrensis, 
* Rosel ix. 157. ¢. 265 ? > Thid. iii, 197. 
* See above, Vot. I. p. 197—. 
