IXHEX TO MAY FLIES AXD MIDGES OF NEW YORK 



347 



Oi-tbotrichia, 64», G9"-70'. 



americana, To'. 75"; figure, 73; ex- 

 planation of figure, 331^ 

 angustella, G9', 70', 70^ 70=. 

 bracliiata, 70-; explanation of 



plate, 318^ 

 cristata, 73», 75«. 

 feteusii, 69^ 75°. 

 Osborn, cited, 249", 314^ 

 Osten Sacken, cited. 160", 23S^ 244', 



314^ 

 Oxyetbira, G4^ 70'-72', 72". 



coercens, 70'-71^; explanation of 



plate, 318^ 

 dualis, 71"-72' ; explanation of 



plate, 319^ 

 frici, 71'. 



viminalis, 71^; explanation of 

 plate, 3181 



Pachyleptus, 108^ 109*, 110\ 



Packard, A. S., cited, 110^ 270», 314^ 



pallens, Ablabesmyia, see Ablabes- 

 myia pallens. 



pallens, Chironomus, 212', 213-. 



palliatus, Cbironon)us, 192% 193', 

 21 7^-1 8^ 



pallidus, Cbironomus, see Chirono- 

 mus pallidus. 



Palmobius, 17\ 



amictilus, explanation of plate, 

 316'. 



Palponayia, 93', 93% 99% 104% 105% 

 105»-6% 106'. 



Panger, cited, 314'. 



par, Metriocnemus, see Metriocue- 

 uius par. 



par, Ortboeladius, 205% 267% 302'. 



parvus,. Camptocladius, 260% 263'. 



pavidus, Chironomus, 282*. 



pectinata, Psamathiomyia, see Psa- 

 matbiomyia pectinata. 



pedellus, Chironomus, see Chirono- 

 mus pedellus. 



pedestris, Chironomus, 193\ 219'. 



Pedicia albivitta, 8', 



pellucidus, Chironomus, 199", 248^ 



pennsylvanicus, Camponotus, 13'. 



Pentagenia, 26'. 



Pentaneura, 89% 121% 160^-^61^; ex- 

 planation of plate, 330°. 

 grisea, 161-. 



perdita, Hydroptila, see Hydroptila 

 perdita. 



Perlidae, 8'. 



Perris, cited, 314'. 



pertinax, Corethrium, 77*. 



Pettit, cited, 314'. 



Philippi, cited, 3141 



photophila, Burmeisteria, 172^ 



Physa beterostropha, 12'. 



pieipes, Metriocnemus, 306'. 



pictipennis. Ablabesmyia, see Abla- 

 besmyia pictipennis. 



pictipennis, Forcipomyia, 10<F. 



pictipennis, Psychophaena, lll^ 



pilicornis, Chironomus, 206". 



pilipes, Chironomus, 244^ 



pilosella, Ablabesmyia, 138*, 138% 

 152='-53". 



pinguis, Procladius, see Procladius 

 pinguls. 



Plant-beetles, aquatic, 7'. 



I'lates, explanation of, 316'-30". 



platypus, Ortboeladius, 182»-83', 267'. 



plat.vpus, Tbalassomyia, 183% 185'- 

 86'. 



plumipes, Tanypus, 135". 



plumosus, Cbironomus, see Chirono- 

 mus phmiosus. 



Podonomus. 89% 121% 161- ; explana- 

 tion of plate, 330'. 

 stigmaticus, 101'. 



Poey, cited, 314''. 



polaris, Cbironomus. 198', 206% 244'-- 

 45'. 



politus, Ortboeladius, 266% 268'. 



Polycentropus lucidus, 14'. 



Polymitarcys, 23', 26^ 

 albus, 18% 59% 60=-62" ; explana- 

 tion of plate, 3 18-. 

 Virgo, 29% 60'. 



Polystoechotes, 16". 



postica. Neuronia, 14^ 



posticalis, Tanypus, see Tanypus 

 posticalis. 



Potamantbus, 23% 26«. 

 praecox, Diamesa, see Diamesa 

 praecox. 



