era Mey 
recently another series of much younger larvae (little over 1 year old) 
were Subjected to a variety of conditions. Surprisingly enough, the ones 
with the greatest range (15 days at 59° F., 15 days at 63.5° F. ))aneees 
days at 81.5° F.) gave the best results. * ”* Very evidently (imam 
at 81.5° (alone) is not sufficient time to induce pupation, but S0edage 
following the slowing of metabolism gives fairly good results. Con— 
trasted with that are other larvae between 2 1/2 and 3 years old with 
little or no pupation record. Only after the temperature was varied did 
pupation take place in any numbers. * * * The experiment just about 
completed indicates that cycles of 2 weeks in length are more desirable 
than constant temperature, but that constant temperatures are more desir— 
able than short cycles of 2 days' duration." 
Note: This record is interesting as confirming, at least for vthie 
insect, an opinion I have long held that constant, and theoretically 
optimumm, temperature and humidity may be unfavorable to the develop— 
ment of insects which, through the ages, have constantly been submitted 
to variations in these conditions.-——C. L. M. 
Poison baits for mole crickets.--C. F. Stahl and J. P. Vinzant, 
sanford, Fla., conducted four feeding tests in May with the changa 
(Scapteriscus vicinus Scudd.), described as follows: "One, comparing the 
cottonseed meal—bran, cottonseed meal-—egg mash, and cottonseed meal—meat 
Scrap combinations, confirmed results of a preceding similar test in 
Showing the superiority of the cottonseed-bran combination. Bait with 
water to moisten it again proved superior to the same bait moistened with 
molasses in water, 1 to 9. Two tests with various bait ingredients used 
alone gave interesting but somewhat contradictory results, indicating that 
the crickets were attracted to animal matter less than to vegetable 
matter. Bran appeared to be as attractive as any of the following in— 
gredients: Cottonseed meal, bran, egg mash (containing milk), meat scrap, 
and fish meal. The combination, cottonseed meal + bran, was better than 
any of the single ingredients." 
A case of apparent pseudoviviparity in beet leafhopper.—-A. C. Cole, 
Twin Falls, Idaho, states that "While dissecting adult Kutettix tenellus 
Bak. to determine the extent of internal parasitization, a perfectly 
formed first-instar beet leafhopper nymph was found within the oviduct of 
the mother. The chorion was unruptured and distinctly visible. Three 
normal eggs were also present. The most plausible explanation of this 
abnormal and premature development is that some fusion or stricture of 
the oviduct prevented normal egg deposition, in consequence of which 
development of the egg began and continued while still within the body 
of the mother, possibly being accelerated under these conditions. The 
collection of E. tenellus from which the abnormal female was taken 
represented a series of 25 each of males and females collected by, Ciara 
Henderson and the writer at a point near Hollister, Idaho, in July 1932." 
More on consumption of fat content by migrating beet leafhoppers.—- 
R. A. Fulton, Twin Falls, who previously reported on a cooperative study 
