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COLEOPTERA 
Anobiidae 
Lasioderma s err i come (F.), the cigarette beetle 
Derris powder (3.6 percent of rotenone) was highly toxio to the 
adults in Mauritius.— J epson (323) . 
Bostrichidae 
Dinoderus bifoveolatus (Woll.) 
Three samples of cube root which had been attacked by this beetle 
were analyzed. The average rotenone content of the whole root was 3.9 
percent, while that of the portion of the root changed into powder by 
the insects was only 1*6 percent*— Jones (326) . 
Rhyzopertha dominioa (F.), the lesser grain borer or Australian wheat 
weevil 
In India lime and cresosote mixed with stored grain gave better 
results than pyrethrum or derris.— Anonymous (4). 
Bruchidae 
Bruchus brachialis Fahraeus, the vetch bruchid 
Good control of this insect in western Oregon and southwestern 
Washington was given in field tests by a dust containing rotenone and 
sulfur. — U. S. Bureau of Entomology and Plant Quarantine (624, p. 27; 
628, p. 131). 
Bruchus pisor um (L„), the pea weevil 
In Oregon a 0.76-percent rotenone dust, applied before the pea 
weevil oviposited, killed nearly 100 percent of the weevils. This 
led to the construction of large, hooded dusters mounted on trucks 
which made possible nearly complete control ••-Mote and Thompson (432 ) . 
Dusts containing 1 percent of rotenone were more effective than 
those containing 0.75 and 0.5 percent, but the difference in toxicity 
between the first and second was less than that between the second and 
third. A cube dust gave lower mortalities with diatomaceous earth 
as a carrier than with talc. The toxicity of a cube dust (0.5 percent 
of rotenone) was inoreased by the addition of 0.225 peroent of pyrethrins, 
— U. S. Bureau of Entomology and Plant Quarantine (524, P» 62). 
