1911.] 



NATURAL SCIENCES OF PHILADELPHIA. 



627 



Oliva liodes 348 



reticularis 348 



r. gatunensis 348 



Olividse 348 



Omphalina, 469, 470, 473-476 478, 



479, 484 



andrewsae 469 



caduca 470 



cuprea 469-474, 478, 485, 528 



c. ozarkensis 470, 472 



c. polita 471, 474 



friabilis 469-476, 526, 529 



fuliginosa.... 469,476 



f. ozarkensis J^72 



f. polita 474 



inornata 469 



kopnodes 470, 471, 474-476 



laevigata 480 



1. latior 482 



1. perlaevis 482 



laminarum 471 



lucubrata 470 



pilsbryi 470, 474, 475, 483 



rugeli oxyeoccus 484 



zonites 470 



Omphix 479 



Oncorhynchus kisutch 552 



nerka 552 



tschawytscha 552 



Onuphidae 254 



Onuphis 254 



nebulosa 269 



parva 263 



vexillaria 266 



Opeas gracile 574 



micra 574,579 



pumilum 574 



Ophibolus 550 



calligaster 550 



Opisthonema oglinum 16, 207 



Opisthopterus macrognathus 210 



Opsarms tau 203 



Opuntia microseris 67 



rutila 67 



Oreohelix 176, 177, 184 



barbata 183 



cooperi 186, 190 



strigosa 186 



s. depressa, 176, 177, 186, 187, 



190, 191 



yavapai 176, 177, 183, 184 



y. angelica 176, 183, 185, 186 



y. extremitatus....l76, 183, 184-186 



v. neomexicana 183 



y. profundorum-..176, 180, 182-186 



Orogenia linearifolia 67, 84 



Orthaulax 337,355 



gabbi 355 



Orthocarpus linearifolius 68, 90, 92 



Orthoderinae 319 



Orthopristis chrysopterus 16 



Oryzopsis euspidata 68, 97 



Osmerus eperlanus 555 



mordax 7 



sergenti 555 



thaleichthys 555 



Osmorrhiza 62 



nuda 68,89 



Osteoglossidse 220 



Osteoglossum bicirrhosum 220 



guntheri 220 



jardinii 220 



leichardti 220 



Ostrea gatunensis 366 



hyotis 366 



iridescens 366 



aff vespertina 366 



Ostreidae 366 



Ovalipes ocellatus 3 



Oxyopes salticus 454 



Oxyopidae 454 



Oxyophthalma gracila 323 



gracilis 324 



Oxyophthalmus 323,324 



somalicus 323 



Oxypilus 326 



capensis 326 



Oxyria digyna 68, 80 



Oxystyla undata jamaicensis . ...577, 579 



Pachygnatha tristriata 448 



Pachystima myrsinites 27, 68, 92 



Palsemonetes vulgaris 3,4 



Palissya diffusa 19 



obtusa 19,20 



sphenolepis 19 



Palpimanus 394 



Paralepas 171 



Paralepidae 571 



barracudina 571 



pseudocoregonoides 571 



Paralichthys dentatus 15, 203 



Parapagurus 280 



Parasphendale minor 326 



Pardosa 404 



canadensis 453 



lapidicina 402,453 



minima 453 



mcesta 453 



retrorsa 453 



Parnassia fimbriata 40, 68 



parviflora 68, 93 



Paroxyophthalmus collaris 324 



Patula strigosa var. cooperi 186 



s. cooperi var. depressa 186 



Patulopsis carinata 470 



Pecten (^Equipecten) effosus 364 



excentricus 365 



gatunensis 365,355 



(Amusium) gatunensis 365 



(Flabellipecten) gatunensis.... 365 



levicostatus 365 



(Amusium) lyonii 365 



(Amusium) mortoni 365 



