244 
Index 
[December 
Melissodes cajennensis, 174 Pachysima, 90 
Melissodes costaricensis, 174 Padus virginiana, 212 
Melissodes tepaneca aschenborniana, 174 Panurgus novce-anglioe, 61 
Melissodes tepaneca panamensis , 174 
Melitoma taurea, 56 
Melittophora, 134 
Melittophora salti, 136 
Membracidse, Cuban, 119 
Mermis parasitism in Pachcondyla 
striata, 199 
Mexican book beetle, 44 
Microdon from Panama, 168 
Microdon wheeleri, 168 
Microtrimeria, 191 
Microtrimeria cockerelli, 192 
Mimetica picteti, 130 
Monecphora bicincta fraterna, 120 
Monobelus flavidus, 124 
Monomorium, 87 
Monomorium minimum , 52 
Mutillidse of Cuba, 16 
Myrmica scabrinodis ( sabuleti ), 52 
Nemeritis canescens, 125 
Nest-building habits of Polistes, 147 
New Clavicorns from United States, 
108 
New England butterflies, 226 
Nomada bella, 232 
Nomada civilis, 232 
Nopsides ceralbona, 235 
North American species of Medeterus, 
36 
Occurence of Gyrinus, 31 
OCHTHEBIUS BRUESI, 3 
Ochthebius interruptus, 3 
Odopcea sagrce (correction), 190 
Odopcea walkeri, 120 
Oribatoid mites, 213 
Orthonops gertschi, 235 
Orthonops overtus, 235 
Pachycondyla fuscoatra, 200 
Pachycondyla striata, 109 _ 
Parandrena wellesley ana, 61 
Paraxonotha kirshi, 112 
Paraxonotha zamiae, 111 
Pediculoides ventricosus, 219 
Pelecinus, 205 
Pelecinus brunneipes, 207 
Pelecinus polyturator, 205 
Pelecium sulcatum, 131 
Perdita opuntice, 67 
Phacelia distans, 63 
Phoridse, Colombian, 134 
Phormia regina, 201 
Phormia terrce-novce, 201 
Phthiracarus oliyaceus, 2 14 
Phthiracarus setosellus, 215 
Physiology of dragon-fly larvae, 182 
Picea excelsa, 217 
Pinus strobus, 217 
Pinus sylvestris, 217 
Pissodes strobi, 216 
Plastoceridae, 139 
Polistes, 147 
Polistes annularis, 147 
Polistes pallipes , 147 
Polistes rubiginosis, 148 
Polistes pallipes, trophallaxis in, 153 
Polistes variatus, 151 
Polistes wasps, reconstruction of nests, 
151 
Probolomyrmex boliviensis, 9 
Probolomyrmex dammermani, 7 
Probolomyrmex filiformis, 8 
Probolomyrmex from Java, 7 
Proctacanthus, 12 
Proctacanthus brevipennis, 12 
Proctacanthus fulviventris, 14 
Proctacanthus gracilis, 15 
Proctacanthus hinei, 13 
Proctacanthus rufiventris, 14 
Proctacanthus rufus, 12 
Proctacanthus vittatus, 14 
Protodonatan from Grand Canyon, 186 
