Packard.] 
INSECTS OE THE GAEDEN. 
7 
others were deposited as barren eggs which, however, were 
found to hatch out drones. It is also known that one of the 
young worker larvae when placed in a separate cell and fed 
upon a peculiar kind of bread became eventually a queen bee. 
These facts give some clew to the anomalies in the gene¬ 
ration of plant lice (Fig. 2). Bonnet ascertained that the 
spring brood of aphides were virgins, which throughout the 
summer brought forth young alive. In the fall of the year, 
however, winged individuals of both sexes appeared, and 
during the winter the species was represented by eggs. 
It has since been discovered by able anatomists, with the 
aid of the microscope, that these spring-born aphides so 
wonderfully prolific, throw off from a “ bud-stock,” by a 
Fig. 2. 
Aphis or Plant Louse. 
process analogous to the budding and leaving out of plants, 
or to the dropping off of hydroid medusae from their potyp- 
stalks, whole multitudes of young plant lice, which mature 
rapidly without passing through the intermediate stages of 
egg, larval and pupal life common to most insects. As if 
nature, in her exceeding haste to fill up her quotas of millions 
of ready made sappers and miners of vegetable life for the 
summer campaign, had disregarded all rules in her otherwise 
well regulated house. In this connection we may refer to Dr. 
Fitch’s enumeration of the number of the Cherry Aphis, 
produced between.the 15th and 25th of June, and^how these 
immense numbers are reduced by insect enemies : 
7 
