1923] Notes on the Nests of Odynerus (Ancistrocerus) 227 
Nest No. 4. The parasite, A. junceiis (female), emerged on 
Maj" 22, two male wasps on the 23d, one on the 24th, one female 
on the 27th, and two on the 28th, a total of 3 males, 3 females 
and one parasite. These emerged through seven openings. 
The presence of a parasite in nest No. 4 can hardly account 
for so few wasps, for nest No. 2, with a parasite, had the same 
number of wasps as nest No. 3. A. junceus has also been bred 
from the potter wasp {Eunienes sp.) and from Odynerus tigris 
Sauss. 
PROCEEDINGS OF THE CAMBRIDGE ENTOMOLOGICAL 
CLUB. 
At the meeting of March, 1923, Prof. C. T. Brues showed 
some new photographs of insects in amber and gave a review of 
the present knowledge of amber insects and fossil insects in 
general. See Scientific Monthly vol. 17, pp. 289-304, (1923.) 
Mr. Emerton exhibited his outfit for collecting spiders. 
At the April meeting. Dr. J. ySi'. Chapman gave a lecture on 
the animals of the Philippine Islands where he has lived for the 
past six years. 
Mr. A. P. Morse told about his entomological experiences 
in Nebraska where, for several summers, he has been observing 
the grasshoppers that eat wheat and corn and also the binder- 
twine with which the grain is tied up. 
At the meeting in May, Mr. O. E. Plath read a paper on 
the various theories in regard to the humming of bumblebees at 
the entrance to the nest. This was noticed as far back as 1665 
and at first interpreted as a call to the other bees. Observation, 
however, has shown that its object is to ventilate the nest. See 
Psyche, vol. 30, pp. 146-154, (1923.) 
Mr. R. F. Hussey described the development of the sucking 
mouthparts of the Hemiptera. 
