536 



Index. 



Olethreutes nubilana, 107 



removana, 107 



separatana, 107 

 Oligia festivoides, 47 



grata, 47 



versicolor, 47 

 Oligocene Deposits, North Dakota, 



281 

 oligostachya, Bouteloua, 221 

 olinalis, Herculia, 99 

 olivacea, Eleocharis, 354, 408 

 olivaceana, Thiodia, no 

 olivacearia, Phigalia, 86 

 olivata, Glsea, 60 

 Omphalocera cariosa, 99 

 On a Collection of Birds from West- 

 ern Costa Rica, 10 

 Onagra biennis, 317, ii2, 351, 396, 417 



oakesiana, 317, SZ^, 4^7 

 onagrus, Spragueia, 65 

 One Horse Shay, 439 

 oneidaense, Acophyllum, 842 

 Oneida lunulalis, 102 

 Onoclea sensibilis, 361, 378, 405 

 Ophioglossacefe, 405 

 ophthalmica, Baileya. 46 

 Opostega albogallierella, 131 

 opulus. Viburnum, 378 

 orbicularis, Camarotoechia, 482 

 orbiculata, Lampsilis, 183, 190 



Lysias, 410 

 orbiculatus, Unio, 183 

 Orbiculoidea, 485 

 Orchidacese, 410 

 ordinatus, Chonostegites, 482 

 oreasella, Argyresthia, 133 

 oregonensis, Euchretias, 43 

 Oreodon, 282 

 orestella, Elachista, 129 

 Oreta irrorata, 79 



rosea, 79 

 orina, Calymnia, 61 

 oriunda, Xylina, 56 

 ornithogalli, Prodenia, 49 

 Ornyx cratregifoliella, 132 

 Orodus, 489 

 Orthoceras, 485 



angustiseptatum, 150 



gregarium, 150 



leander, 485 



niontanense, 148 



pertextum, 484 

 Orthoceratidre, 148 

 Orthoceratites, 486 

 Orthodes crenulata, 55 



cynica, 55 



vecora, 55 

 Orthofidonia semiclarata, 83 



Orthofidonia vestaliata, 83 

 Orthosia bicolorago, 59 

 helva, 59 

 lutosa, 59 

 ralla, 59 

 Ortmann, Dr. A. E., 5, 454, 455 



A Preliminary Ljst of the Unio- 

 nidae of Western Pennsylvania, 

 With New Localities for 

 Species from Eastern Penn- 

 sylvania, 178-219 

 ortmanni, Goniobasis, 273 

 Oryzopsis asperifolia, 407 

 Osmorhiza claytoni, 326, 371, 378, 417 

 Osmundacese, 405 

 Osmunda claytoniana, 378, 405 



spectabilis, 378, 405 

 osseella, Brachiloma, 126 

 ossularia, Eois, 83 



Osteology of Blastomeryx and Phy- 

 logeny of the American Cer- 

 vida, 475 

 Ostrea, 274 

 ostreonalis, Metrea, 95 

 ostrinella, Manhatta, 104 

 Ostrya, 397 

 I virginiana, 411 



otho, Thymelicus, 35 

 otiosana, Eucosma, 109 

 Outram Bangs, 138 

 ovata, Apatela, 45 

 Eleocharis, 409 



ventricosa, Lampsilis, 181, 182, 

 186, 189 

 ovatus, Unio, 181, 183 

 Overbeck, F. C, 27 

 oviduca, Graphiphora, 55 

 ovilla, Nola, 90 

 oviplagalis, Tosale, 99 

 Oxyclsenidse, 20 



Oxycoccus macrocarpus, 369, 397, 418 

 Oxydactylus, 161 

 oxygramma, Autographa, 63 

 Oxyptilus periscelidactylus, 105 



tenuidactylus, 105 

 packardata, Eupithecia, 80 

 packardella, Gracilaria, 132 



Semioscopsis, 127 

 Packardia albipunctata, 92 

 elegans, 92 

 geminata, 92 

 Psectes abrostoloides, 6^ 



oculatrix, 63 

 Page, O. O., 436 

 Paisley. Samuel, 432 

 palaeogama, Catocala, 69 

 Palseolagus, 231 



