THE BKOAD-BEAN WEEVIL. 65 
On April 15, the first warm day since April 1, 15 adults were captured on Windsor 
beans and placed in paper bags over growing beans in order to obtain eggs. While in 
the bags two pairs were observed copulating and one pair was confined for further 
observation. 
Eggs were observed April 22, cemented to the outside of the bean, and when removed 
with a camel' s-hair brush a fringe of cement was observed attached to the side of the 
egg- 
Many eggs were observed April 25, scattered promiscuously over the pods. Some 
were nearly ready to hatch, but the greater number were newly laid. No eggs were 
found on the stems or leaves. 
The number of eggs on the various pods were as follows: 4, 8, 5, 15, 2, 3, 16, 10, 6, 3, 
2, 4, 2, 8, 2, 5, 6, 7, 5, 10, 11, 34, 11, 14, 25, 10, 6, 20, 27, and 13. 
A few adults were observed on the bean pods April 28. They were apparently 
ovipositing, though the act could not be witnessed. A few seen on the upper leaves 
were captured, placed in cold storage, and retained for egg laying. Four days later 
they were removed, and eggs were obtained. 
It was observed that the adults, when disturbed, either flew away or contracted 
their legs and dropped, much as do other weevils when feigning death, but began 
moving again before they had struck anything in their fall. 
May 1, eggs that had undoubtedly hatched were observed to have a dark or black- 
edged hole under one end, the larva having entered the pod by boring a hole through 
the side of the eggshell that was attached to the pod and then into the pod itself. 
Sixteen eggs were laid May 4. On May 16, distinct dark spots were observed in the 
ends of the eggs, while the other ends were translucent brownish. The dark spots 
were very distinct on the 18th, and on the 19th a few eggs had hatched, while others 
were hatching. All larvae had emerged by May 20. The egg period in this case was 
15 days. 
The first hatched egg of those laid May 5 was observed on May 18. Others had 
hatched May 19. Of the eggs laid May 6 to 7, the first was observed to have hatched 
on May 18. All but one were hatched on May 19. 
These eggs were laid in the field, the adults being inclosed in paper bags which 
were kept over the eggs as a protection against predaceous insects. 
In emerging from the egg the larva was first observed to draw its head back so that 
the body occupied about three-fourths of the shell. Then it bored down through the 
side of the shell which was attached to the bean pod, and as the larva entered the pod 
the end of the egg previously occupied by the abdomen became clear, and finally 
the entire shell was glassy and transparent in appearance. Just before emerging 
the head of the larva was quite black and the abdomen seen through the eggshell 
appeared yellowish. 
On July 10, larvae were observed to be thriving in the beans taken from the vines 
at Sacramento, Cal., June 20, though the beans were perfectly dry. 
August 3, larvae and pupae were taken from Windsor beans that were collected in the 
field at Sacramento June 20. Although some of the larvae had pupated, they had 
apparently been in that stage only a very short time. They were pure white and 
very delicate. 
The point where the larva entered the bean was marked by a black dot which had 
remained from the time that the larva entered. 
When the larva was about to pupate a transparent spot appeared on the epidermis 
of the bean where the larva had eaten out the cotyledon close to the epidermis or seed 
coat. This transparent spot was not at the point where the larva had entered the bean, 
but at varying distances from that point. 
