1922 ] 
Index 
239 
Nesonyx, 9. 
New England Coleoptera, 4. 
New Zealand Hymenoptera, 216. 
Notes on Neottiglossa trilineata, 
86 . 
North American Pedinomma, 6. 
Nyctunguis, 9. 
Odontaulacus bilobatus, 95. 
Odontaulacus rufitarsis, 96. 
Odontomerus canadensis, 97. 
Odynerus tigris, parasite of, 99. 
Olfersia, notes on, 84. 
Olfersia albipennis, notes on, 82. 
Olfersia am eric ana, notes on, 83. 
Oleisoprister abbotii, 95. 
Oliogocene Ants, 176. 
Olixon, 103. 
Ornithoica confluenta, notes on, 80. 
Ornithomysia anchineuria, notes on, 
81. 
Orthopelma luteolata, 96. 
Pachypeza, 45. 
Palinzele, 15. 
Palinzele oceanica, 15. 
Pammegischia burquei, 96. 
Paniscus, 19. 
Paniscus fijiensis, 19. 
Paniscus productus, 20. 
Paniscus contraries , 20. 
Paniscus opaculus ( testciceus var.), 
20. 
Panorpidae, feeding habits of, 212. 
Panorpa maculosa, feeding habits 
of, 212. 
Panorpa rufesceus, feeding habits 
of, 212. 
Panstronglus guentheri, 111. 
Panurgidae of Illinois, 159. 
Panurgidae visiting flowers, 172. 
Parabetyla, 224. 
Parabetyla spinosa, 224. 
Paragryon castaneus, 220. 
Paragryon gracicilipennis, 221. 
Parasitic Hymenoptera, 10. 
Parasitic Hymenoptera, 216. 
Pedinomma, 6. 
Pedinomma angustipenne, 6. 
Pedinomma nearcticum, 7. 
Pedinomma rufescens, 6. 
Pedogenesis in the blow-fly, 127. 
Pedogenesis in various insects, 130. 
Perdita, 161. 
Perdita octomaculata, 169. 
Perditella, 161, 162. 
Perditella boltonice, 169. 
Perithous pleuralis, 97. 
Pezomachus (See Gelis). 
Pezomaciius phiepotti, 218. 
Phenology of Panurgidae, 166. 
Philoenus, 1. 
Philoenus leucophthalmus, 1. 
Philoenus lineatus, 1. 
Philoenus bilineata, 1. 
Phlceotrya quadrimaculata, parasite 
of, 97. 
Platycnema imperfecta, 46. 
Platypezidae, new genus of, 45. 
Platycelio, 21. 
Platyscelio abnormis, 22. 
Platyscelio mirabilis, 22. 
Platyscelio pulchricornis, 21. 
Platyscelio punctatus , 22. 
Platyscelio wilcoxi, 22. 
Platycnema, 45. 
Probetyla, 222. 
Probetyea subaptera, 223. 
Pseudobracon, 15. 
Pseudococcus bromelice, 133. 
Pseudoccus rotundus, 135. 
Pseudolfersia fumipennis, notes on, 
84. 
Pseudolfersia spinifer, notes on, 85. 
Pseudofoenus, 12. 
Pseudopanurgus, 163, 164. 
Pseudopanurgus albitaris, 169. 
Pseudopanurgus asteris, 170. 
Pseudopanurgus cornpositarum, 170. 
Pseudopanurgus labrosiformis, 170. 
Pseudopanurgus labrosus, 171. 
Pseudopanurgus rudbeckice, 171. 
Pseudopanurgus rugosus, 171. 
Pseudopanurgus solidaginis, 171. 
Psithyrus, habits of, 180. 
Puffball bettle, 92. 
Ithopalosoma, 107. 
Rhysella humida, 98. 
Bliyssa lineolata, 98. 
Ripersia petioeicola, 140. 
Ripersia subcorticis, 141. 
Scambus tecumseh, 97. 
Scaptocoris castaneus, 124. 
Scelionidae, 21, 219. 
Schendyloid chilopod, 9. 
Scorpion-flies, feeding habits of, 
212 . 
Seal of the Cambridge Entomo- 
logical Club, 45. 
Serphoidea, 10. 
