300 
eggs upon the stored and damaged beans, and another generation will 
soon develop. This may go on indefinitely, or until the food supply is 
exhausted, although in closed receptacles the beetles always appear 
anxious to escape. 
The first published record of this continuous breeding in stored beans 
was probably our note in 1882, above alluded to, where, in reply to a 
question from a correspondent in Bremen, Ohio, we wrote: ‘“ Unlike 
the Pea Weevil, the Bean Weevil continues to multiply in the stored 
beans. These, when infested, are usually reduced at last to nothing 
but powder, and have no value as seed.” 
In 1878~79 we made a number of observations upon this species, from 
which some interesting points have been determined. On December 
31, 1878, we received from Indian Territory a lot of badly infested 
beans, from which many beetles had already issued. Close examination 
showed that larve in all stages of growth and pupe were still contained 
in thebeans. January 21, 1879, a dozen beetles, just issued, were placed 
in a vessel with sound black beans for observation. Two days later 
quite a number of eggs had been deposited. They were simply glued 
to the outside of the beans, no cavity having been provided for them 
by the beetles. A few were found loose in the jar. These eggs were 
0.7 mm. long and 0.3 mm. in diameter at the stoutest part. They were 
white, and closely granulated. February 8, or sixteen days after ovipo- 
sition, two of the eggs hatched. The young larve moved about quite 
briskly, and when in motion curved the body at each step. This it is 
enabled to do by the possession of temporary legs, while its other char- 
acters, aS compared with those it assumes within the bean, fit it for 
moving over and penetrating the smooth but rather thin skin of our 
ordinary beans. 
BRUCHUS FABZ—First larva.—The larva at this stage presents a very curious 
appearance and differs widely in important characters from the second stage. The 
body is hardly so stout in proportion to its length; the prothoracic plate bears two 
pairs of projecting spurs, the hinder pair having each a serrate edge of four teeth, 
and the anal plate also bears four horny, pointed tubercles. On the head there are 
two very evident eye spots; the antenne are four-jointed, and bear side pieces arising 
from the basal joint. The mandibles have two blunt teeth and the labium is large 
and fleshy, and is differentiated into two viscid, papillose paraglosse and a central 
ligular prominence with two papille. The insect at this stage differs, however, 
most notably from the more mature larve in possessing six postembryonic legs, as. 
shown at Fig. 48. Each of these legs is composed of three apparent sclerites, the 
basal one stout, coxa-like, and scarcely differentiated from the body. The second is 
long and slender and may correspond to the fused femur and tibia. This joint bears 
several hairs at its tip and gives rise to the third joint, which we may call the tarsus, 
and which is much more slender than the second joint and is broadened at its tip 
into a flat pulvillus, bearing at the heel a single delicate spur, as shown at Fig. 439. 
Nine spiracles are plainly seen, eight being abdominal and one mesothoracic. There 
is a row of very long, subdorsal hairs, a shorter row between this and the median 
line, and another lateral row intermediate in length between the two just mentioned. 
We are not aware that similar structural peculiarities in the first 
larval stages of Bruchus have been pointed out before. They seem to 
