1911.] 



NATURAL SCIENCES OF PHILADELPHIA. 



633 



Theridium 396 



atrimontanum 444 



blandum 445 



differens 444, 445 



frondeum 445 



globosum 445 



kentuckyense 397 



murarium 445 



ported 397 



punctosparsum 444 



rupicola 444 



o*"\|T*olp A A A 



tepidariorum, 377, 379-393^ 395, 

 397, 413, 414, 444 



Theridula sphserula 445 



Thiodina sylvanus 455 



Thomisidae 451 



Thracia gatunensis 372 



Thryssa valenciennesi 220 



Thuya plicata 20 



Thymallidse 555 



Thymallus thymallus 555 



tricolor 555 



Thysanophora apex 574, 578 



dirninuta 574, 578 



dioscoricola 574, 578 



epistyliulum 578 



hornii 191 



inconspicua 574 



ingersolli '. 191 



spreta. 574,578 



turbinif ormis 578 



Tmarus caudatus 452 



Townsendia sericea 77, 85 



Trachelas tranquilla 442 



Trachinocephalus myops 563 



Trachinotus 3 



carolinus 12 



falcatus 203 



Trachycardium 338 



Trifolium 77,95 



Triglochin maritimum 32, 77, 88, 90 



Triportheus 433 



flavus 433 



Trisetum subspicatum 77, 98 



Trochosa cinerea 454 



frondicola 405 



Troglohyphantes 396,397 



Troximon aurantiacum 30, 77, 85 



Truncatellidae 575 



Tudora arcuata 577, 580 



fecunda 579 



Turritella 359 



altilira 358,359 



altilirata 358, 359 



conradi 358 



gabbi 358 



gatunensis 358, 358 



mimetes 357 



planigyrata 358 



sapotensis 359 



subannulata 358 



Turritella tercbrif ormis 359 



tornata 359 



tristis 358,358 



uvasana 358 



variegata 357 



Turritellkke 357 



Turritidse 343 



Tutelina elegans 455 



Tylosurus 3 



marinus 11, 203 



Typha latifolia 32, 77, 94 



Typhis alatus 354 



gabbi 354 



martyria 354 



obesus 354 



Uloborida: 451 



Uloborus plumipes 451 



Ulva 545 



enteromorpha 538, 544 



Umbra 4 



pygmaea 10 



Unisulcus 545 



Urocoptidse 574, 579 



Urocoptis brevis 579 



gravesii 574 



sanguinea 579 



Uroctea 394 



Urophycis regius 16 



Urtica holosericea 77, 93 



Uta ornata 226 



stansburyana 226 



symmetrica 226 



Vaccinium caespitosum 35, 78 



Valeriana 39 



edulis.. 38,78,94 



sylvatica 78 



Valerianella congesta 78, 80 



Vallonia cyclophorella 197 



perspectiva 197 



ValIoniida3 197 



Varicella blandiana 575 



costulata 579 



dissimilis 579 



propinqua 575 



Veneridse 368 



Venus circinata 370 



ulocyma 369 



Veratrum californicum 78, 81 



Vermetidee 359 



Verruca nexa alba 173 



Vertigo coloradoensis arizonensis... 197 



concinnula 197 



milium 527 



oscariana 528 



rugulosa 529 



Vicia americana 78 



Viola cucullata 78 



palustris 78, 81 



Vitrea hammonis 526, 528 



indentata 526-532 



i. umbilicata 191, 527-531 



significans 526 



