388 REFERENCES 



Piophila casei, Bur. Ent. Bull. 4. 



Plodia i?iterpunctella, N. C. Exp. Sta. Bull. 203. 



Plusia simplex, Bur. Ent. Bull. 33. 



Plutella maculipennis, Ky. Exp. Sta. Bull. 114. 



P cecilocapsus lineatus, N. Y. Cornell Exp. Sta. Bull. 58. 



Polychrosis viteana, N. Y. Cornell Exp. Sta. Bull. 223. 



Pontia protodice, 1st Rpt. Minn. State Ent., pages 71-77. 



Pontia rapoB, Bur. Ent. Bull. 60. 



Porthetria dispar, N. H. Exp. Sta. Bull. 136. 



Prionus imbricornis, 5th Rpt. Minn. State Ent., page 110. 



Prodenia ornithogalli, Bur. Ent. Bull. 43. 



Pseudococcus calceolarice, La. Exp. Sta. Bull. 121. 



Pseudococcus citri, Cal. Exp. Sta. Bull. 214. 



Psila roscB, Bur. Ent. Bull. 33. 



Psoroptes communis, Ind. Exp. Sta. Bull. 80. 



Psylla pyricola, Rpt. Conn. State Ent., 1903, pages 262-266. 



Psylliodes punctulata, Bur. Ent. Bull, 66-VI. 



Pteronus ribesii, Rpt. Conn. State Ent., 1902, pages 170-172. 



Pulvinaria vitis, 111. Exp. Sta. Bull. 112. 



Pyralis farinalis, N. C. Exp. Sta. Bull. 203. 



Rhagoletis cingulata, N. Y. Cornell Exp. Sta. Bull. 172. 



Rhagoletis pomonella, N. H. Exp. Sta. Cire. 14. 



Rhopobota vacciniana, Mass. Exp. Sta. Bull. 115. 



Sanninoidea exitiosa, Ga. Exp. Sta. Bull. 73. 



Saperda Candida, Bur. Ent. Circ. 32. 



Schistocerus hamatus, Farmers' Bull. 70. 



Schizoneura lanigera, Colo. Exp. Sta. Bull. 133. 



Schizura concinna, N. H. Exp, Sta. Bull. 139. 



Selandria vitis, Rpt. N. J. State Ent., 1889, page 304. 



Sibine stimulea, 4tli Rpt. Minn. State Ent., pages 98-99. 



Silvanus surinamensis, N. C. Exp. Sta. Bull. 203. 



Siphocoryne avence, Colo. Exp. Sta. Bull. 133. 



Sitones flavescens, 111. Exp. Sta. Bull. 134. 



Sitotroga cerealla, N. C. Exp. Sta. Bull. 203. 



Sphenophorus maidis. Bur. Ent. Bull. 95-11. 



Sphenophorus spp.. 111. Exp. Sta. Bull. 95. 



Sphinx spp., 4th Rpt. Minn. State Ent., page 29. 



Spilonota ocellana, Rpt. Conn. State Ent., 1909, page 353. 



Stomoxys calcitrans, Bur. Ent. Circ. 71. 



Synanthedon pictipes, Bur. Ent. Bull. 68-IV. 



Synchlora cerata, 8th Rpt. N. Y. State Ent., pages 129-133. 



Systena blanda, Bur. Ent. Bull. 23. 



