ay a 
Male wirevorn ad adults mate more then once.--In some preliminary. 
experiments 3 designed to aid in the a eR Nes of the effectiveness ~ 
of control brought about by .the -trapping of male click beetles, C. ‘E. 
Woodworth, Walla Welle, -Wash,, finds "that hailed relatively high F 
perc centapes.of males were removed there might be little reduction in 
fertilizations..: For this, study: both Limonius canus’ Léc. and’ Li. 
califcornicus. Mann. were used;..and both species: ; tended to the same ~ 
result. In experiments with L. canus, 16 males were taken’ after,” 
having successfully fertilized ad an dennis of females and were 
placed. with fresh females. In due time 10 of these fémales began to 
lay eres. To,date larvae. have been found in 6 of the’ tases. Three © 
of the LO males had not dicd by the beginning of eg¢ laying and were 
placed with a third set of females, with the result that in one case 
ggs were.laid, the male: concerned having stimulated 5-females to 
egg oroduct ion. The interesting thing about these 5 matings Ls that, 
none of the eggs have oroved viable, even though the eggs from the” 
first 3. matings hove had sufficient Yaa 2 SEAT Ss The only proof 
used in these experiments for, fex ti tity ha deen the presénce of — 
hatched. laryag.: With L. californicus considerably greater difficulty 
was experienced. in conducting the. experiments. The females have the. 
habit of. burying the eggs, thus making them very hard to find. seam 
date only 2 definite cases of. second fertilization‘ have been opie. 
There have. been.4:out.of 30 cases of ee confined singly in salve 
cans where. egzs,were produeed, but in no case has hatching taken place. 
This indicates that unfertilized females a, occasionally lay eggs: but 
hat they are, alway s,.-infertile.... After 3 cases of successful ‘fireee 
matings. the males bese? dissected. . In cach ar spermatazoa were 
denonstrated in the testes and in the af ee 1 horns of the ‘seminal 
vesicle. This evidence pa to the pos sibility a ARCS SES? ne toe 
a 
On 
Survival een weevils from the 1932 crop in signe: “~neeordiig 
to &. CG. Larson ,- Corvallis, Oreg., "three samples- of unfumigated weevily 
peas frem the. 1932, erop, whieh had been stored in a’ warehouse at Albany, 
Oreg., were examined for living yea weevils 3(Bruckus- pisorun , L.) liost | 
of these wee vil Shad been killed in ‘harvesting and: cleaning’ the peas. 
Only a small jve centage of the weevily peas were not'glassy. In two ~ 
of the samples all the weevils were dead, while in the other sample 
_jbhree living adults were found... There were from 500 to i, Q00 weevily _ 
peas in each sample." arid 
i 
., Conference jon residue Reis ee at Washington, ‘D. Soe Saree the 
period February..le to 15,°N.. 7. Toward,” Wi. A. Thomas,"J. U. Gilmorey || 
and %. J.. Reid, Jr., met at tho Washington. office for ‘the Digna oF a 
conference and tne revision of: the memorandum issued Pobruary 1 53°on | 
Means of Bliminating Harmful Insecticidal Residues in Boe LIOR with 
Vegetables, Small Fruits, and Tobacco. This payer is to be issued by 
the end of March in mimcographed fourm and will be sent to State organ- 
izations and others interested. Copies will be available to all Bu- 
reau workers who signify bets interest. 
Y 
