-83- 
none and oil spray; end the third was a rotenone-pyrethrum-oil 
spray. A nicotine and soap spray was distinctly better than these 
materials.-- Hamilton (252 ). 
Saissetia oleae (Bern.), the black scale 
tow concentrations of oil with rotenone were more effeotive 
against the larger adults than oil at the full concentration.— Boyce 
and coworkers (80, 81) • 
For the oembined oontrol of this scale, aphids, and the red 
mite, a spray consisting of light-medium oil (i to 3/4 peroent) with 
rotenone may be used.— Quayle (462 , p. 26) • 
Delphaoidae 
Sogata furoifera (Horv.) , rioe hopper 
The control measures recommended in Fiji were draining the rioe 
fields, spraying the plants from a watering can with a suspension of 
1 pound of derris in 10 gallons of water, or scattering rice bran 
impregnated with kerosene on the water in the fields.— Lever (362 ) . 
Derbidae 
Proutlsta moesta (Westw.) 
This insect on sugar cane in the Philippine Islands can be con- 
trolled by spraying with soap solution and nicotine sulfate or derris 
powder.— Otanes and Karganilla ( 453) . 
Psyllidae 
Paratrloea cockerelli (Sulo), the potato payllid, tomato psyllid 
A derris dust (0.6 percent of rotenone) and pyrethrum powder 
(0.17 percent of pyrethrins) were ineffective against -the nymphs 
on tomatoes.— List (366 ) . 
HBTEROPTERA 
Cimioidae 
•Cimex lectularlus L., the bedbug 
Household sprays containing pyrethrum and lerris are usually 
applied in Southern Rhodesia to combat minor infestations or as a rou- 
tine precaution against infestation, but they may in time considerably 
reduce even major infestations.— Mossop (431) . 
