- 89 - 
Insect 
Lophyrus pini L. 
Lygus hesperus Knight 
Lygus pratensis L. 
Malacosoma americana F. 
Mamestra picta Harr. 
Ee^ult 
Loss effective 
than derris 
Less effective 
than derris 
Ineffective 
Less effective 
than derris 
Effective 
Ineffective 
Reference 
S-noon 390 
Melittia, s atyriniformis Hbn. Effective 
Melophagus o vinu s L. 
Murganti a histrionica Hahn 
Muse a domestica L. 
I/iyrmica rubra L. 
ITeo diprion l econtei Eitch 
No don at a muicticollis Say 
1 i o r rhy n chu s sinful ari s 
Psratetranychus ci tri McG. 
(Adults and eggs) 
Pear slugworm or sawfly Effective 
Pecbinophora gossypiell a Saund. Some control 
Ineffective 
Effective 
Effective 
Effective 
Less effective 
than derris 
100$ effective 
60$ effective 
Effective 
Ineffective 
Cassidy and Barber 65 
Smith and Scales 382, 
383 
Felt and Bromley 144 
Hamilton 185 
Hervey, Kuckett and 
Glasgow 191; N. Y. 
(Geneva) Agr. Expt. Sta, 
304 
Mass. Agr. Expt. Sta, 
272 
Wille et al. 471 
Howard and Mason 201 
LePellcy and Sullivan 
260 
Spoon 390 
Hamilton 185 
4 
Hamilton 185 
Kearns and Umpleby 237 
Boyce 37 
Kearns and Marsh 235 
U. S. Dept. Agr. 420 
Chapman, Hollingsworth, 
Robertson 71 
