214 
midas, Parameletus, 99, 103 
minerva, Heptagenia, 181, 183, 193 
mingo, Hexagenia, 39 
minimella, Ephemerella, 61, 67, 64, 74 
minnetonka, Stenonema, 156, 159, 164 
minor, Cloeon, 141, 143 
minutum, Pseudocloeon, 136 
modestus, Epeorus, 155 
modestus, Stenonema, 155 
moerens, Leptophlebia, 90 
moerens, Paraleptophlebia, 5, 88, 89, 90 
mollis, Cloe, 93 
mollis, Leptophlebia, 90, 93 
mollis, Paraleptophlebia, 59, 90, 93 
morrisoni, Rhithrogena, 152 
munda, Hexagenia, 38, 39, 0, 41, 41 
myops, Ephemera, 15 
myops, Ephemera, 31 
myops, Potamanthus, 4, 29, 31, 31, 32, 34 
myrsum, Pseudocloeon, 137, 139 
N 
namatus, Epeorus, 179, 195, 195, 196 
nanus, Baetis, 125, 136 
natata, Ephemera, 36 
neavei, Ametropus, 146 
nebulosa, Leptophlebia, 5, 23, 82, 85, 38 
nebulosa, Palingenia, 85 
needhami, Ephemerella, frontis., 4, 5, 23, 58, 59, 
63, 63, 64, 67 
neglectus, Potamanthus, 31, 32 
Neocloeon, 114, 140 
Neoephemera, 27, 42, 43 
Neoephemeridae, 22, 26, 27, 42 
Neoephemerinae, 21 
Neoephemeropsis, 42, 43 
nepotellum, Stenonema, 158, 160, 161, 162, 177 
nepotellus, Ecdyonurus, 177 
norda, Ephemerella, 69 
norvegicus, Metretopus, 148 
novangliae, Siphlonurus, 107 
O 
obesa, Baetis, 78 
obesa, Baetisca, 4, 16, 24, 76, 77, 78 
occulta, Palingenia, 39 
ochris, Baetis, 123, 125, 132 
odonatus, Potamanthus, 15 
odonatus, Potamanthus, 85 
ohioense, Stenonema, 164 
Oligoneuria, 80 
Oligoneuriidae, 18, 21, 22, 26, 79, 80 
Oligoneuriinae, 21, 22 
Oniscigaster, 99 
ontario, Leptophlebia, 92 
ontario, Paraleptophlebia, 4, 89, 90, 92 
ora, Ephemerella, 56, 58, 59, 70 
Ordella, 50 
Oreianthus, 42 
orlando, Hexagenia, 41 
Oxycypha, 48, 50 
Palingeniidae, 21 
Palingeniinae, 21, 22 
ILtino1is NaturAL History SurveEY BULLETIN 
Palingeniini, 21 
pallens, Hexagenia, 39 
pallidula, Baetis, 132 
pallidulus, Baetis, 4, 723, 125, 132 
pallidus, Eurycaenis, 49 
pallipes, Palingenia, 86 
Palmenia, 103 
papuana, Plethogenesia, 7 
Paraleptophlebia, 10, 81, 84, 87, 91, 96 
Parameletus, 98, 99, 103 
parvulum, Pseudocloeon, 4, 137, 138 
parvus, Baetis, 130 
patoka, Heptagenia, 181, 782, 187 
pecatonica, Metreturus, 9, 147, 147, 148 
pellucida, Rhithrogena, 197, 198 
Pentagenia, 35, 37 
perfida, Heptagenia, 181, 182, 184, 189, 190 
peridius, Tricorythodes, 46, 47, 48 
persimplex, Heptagenia, 181, 782, 184, 200 
phoebus, Baetis, 723, 125, 126, 136 
phyllis, Baetis, 722, 125, 134 
placita, Heptagenia, 175 
pleuralis, Epeorus, 152 
pluto, Baetis, 122, 124, 125, 126, 133 
Polymitarcidae, 21, 27, 28, 32 
Polymitarcini, 20, 21 
Polymitarcys, 32 
Potamanthidae, 21, 27, 30, 42 
Potamanthinae, 21, 22, 28, 30 
Potamanthini, 21 
Potamanthus, 30, 30, 31, 33, 108 
Potameis, 103 
Povilla, 1 
praepedita, Leptophlebia, 91 
praepedita, Paraleptophlebia, 4, 5, 24, 82, 83, 
88, 89, 90, 91, 91, 92 
presidiana, Traverella, 82, 97 
primus, Campsurus, 28 
primus, Tortopus, 4, 10, 25, 28, 29, 34 
Procloeon, 141 
propinqua, Acentrella, 126 
propinqua, Cloe, 15 
propinqua, Cloe, 126 
propinquus, Baetis, 4, 24, 99, 122, 123, 126 
Prosopistoma, 75 
Prosopistomatidae, 21, 22 
Prosopistomatinae, 21, 22 
Protereisma, 97 
proximum, Stenonema, 164 
prudens, Brachycercus, 49 
prudens, Eurycaenis, 49 
prudentalis, Ephemerella, 60, 60, 64, 72 
Pseudiron, 144, 145, 146, 148, 149, 200 
Pseudocloeon, 114, 136 
Pseudophaea, 20 
pudica, Ephemera, 171 
pudicum, Stenonema, 157, 160, 161, 171 
puella, Campsurus, 30 
puella, Palingenia, 28, 29 
pulchella, Palingenia, 15 
pulchella, Palingenia, 179 
pulchellum, Stenonema, 23, 155, 160, 161, 162, 
176, 179 
pulla, Heptagenia, 181, 782, 183, 185 
pullus, Ecdyurus, 185 
punctata, Caenis, 46, 51 
punctiventris, Cloeon, 137 
punctiventris, Pseudocloeon, 4, 136, 137 
Vol. 26, Art. 1 
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