APHIS. 
171 
is so named from its being principally found on 
that well-known plant. It is a rather small species, 
and is of a green colour, spotted with black: the 
males are generally winged, and are smaller and 
more slender than the females. 
Aphis Rosce or Rose Aphis is very frequent dur- 
ing the summer months on the young shoots and 
buds of roses: its size is nearly similar to that of 
the Yarrow Aphis, and its colour a bright green: 
the males are furnished with large transparent 
wings. 
Aphis Tilice or the Lime-Trees Aphis is one of 
the most beautiful of the genus. It is of nearly 
the same size uhth the Aphis Rosae, but of a pale 
greenish yellow colour, with a row of black, cres- 
cent-shaped spots down each side of the abdomen, 
and a black stripe on each side the thorax: the 
wings are beautifully transparent, with brown 
nerves or veins, a black edging down the shoulder- 
part, and several dusky patches toward the tips. 
In the sixth volume of the Transactions of the 
Linnagan Society of London we find an excellent 
paper on the subject of these animals by the late 
ingenious Mr. Curtis. “ The leaves (says he) of 
,such trees and plants as have a firm texture and 
strong fibres, though infested with these^ insects, 
preserve their form; but the more tender foliage 
of others, and flowers in general, cannot bear their 
punctures without curling up and becoming dis- 
torted; in consequence of which they lose their 
beauty entirely and irretrievably. The cultivators 
of plants, especially in stoves and greenhouses, 
