270 



INDEX 



thomsoni (Estlandia) ,115 

 tioga (Cariniferella), 122 

 transversa King (Rhipidomella), 134 

 transversa Pander (Orthis), 76, 84 



latestriata (Orthis), 84 

 transversa Walcott (Nisusia), 45 

 transversus Pander (Clitambonites), 113 

 transversus Pander (Hemipronites), 116 

 transversus Willard (Plassiomys), 94, 96 

 trempealeauensis (Billingsella), 49 

 trentonensis McEwan (Platystrophia), 65, 68 



champlainensis (Platystrophia), 65 



perplana (Platystrophia), 65 

 trentonensis Raymond (Vellamo), 114 

 tricenaria (Hesperorthis), 23, 86, 87 

 tridens (Platystrophia), 66 

 trigeri (Isorthis), 150 

 trigona (Paurorthis), 79 

 trigonula (Pahlenella), 117 

 Trilobation, 165 

 trilobatum (Rhipidium), 181 

 Triplesia lateralis, see Syntrophia 



poloi, see Yangtzeella 



primordialis, see Syntrophina 

 triplesiana (Stricklandia), 187 

 triplicata (Huenellina), 160 

 triplicatella (Plectorthis), 58 

 Tropidoleptidx, 152 

 Tropidoleptus, 152 

 truncatus (Porambonites), 102 

 tscheffkini (Noetlingia), 105 

 tschernyscheffi (Enteletes), 146 

 tullbergi (Archa^orthis), 81 

 tulliensis (Schizophoria), 143, 150 

 tumidula (Clorinda), 172 

 tumidus (Hemipronites), 115 

 turgida (? Linoporclla), 151, 152 

 Twenhofel, W. H., 92, 95, 165 

 typa (Marionella), 96 

 typica (Syntrophinella), 156 



uberis (Mendacella), 127 

 Ulrich, E. O., 27, 43, 68, 109 

 ulrichi (Plassiomys), 94, 96 

 ultima (Vellamo), 114 

 umbo (Orthis), 76 

 unicostata (Platystrophia), 66 



crassiformis (Platystrophia), 66 

 unguiforme (Conchidium), 181 

 unguis Bancroft (Wattsella), 125 

 unguis Sowerby (Nicolella), 77 

 uniplicata Cooper (Pionodema), 141 

 uniplicata McEwan (Platystrophia), 65, 68 



uticana (Platystrophia), 65 

 uniplicata Nettelroth (Gypidula), 174 

 uralica Gorsky (Aulacophoria), 145 

 uralicum Tschernyschew (? Skenidium), 73 

 utahensis Walcott 1905 (? Nisusia), 45 

 utahensis Walcott 1912 (Otusia), 52 



Valcourea, 10, 19, 22, 23, 25,* 94, 97, 98 

 vanuxemi (Rhipidomella), 134 



pulchella (Rhipidomella), 134 

 variabilis (Rhipidomella), 134 

 varians (Rhynchocamara), 189 

 varicus (Bilobites), 130 

 Vellamo, 17, 23, 38, 107, 114 

 ventricosa Hall (Barrandella), 173 

 Ventricosity, 162 



ventricosus Kutorga (Porambonites), 102 

 ventrocarinata (Valcourea), 97 

 vermontana (? Huenella), 160 

 Verneuil, E. de, 1 1 3, 1 17, 1 18 

 verneuili Eichwald (Vellamo), 1 14 



wesenbergensis (Vellamo), 114 

 verneuili Hall (Anastrophia), 169 

 verneuilianus (Bilobites), 130 

 vespertilio (HarknesseUa), 138 

 villenovia (ThiemeUa), 136 

 ViRGiANA, 165, 166, 171, 178, 185 

 Virginia (Cariniferella), 122 



beta (Cariniferella), 122 

 visbyensis (Parmorthis), 36, 129 

 volborthi Billings (Camerella), 167, 168 

 volborthi Pahlen (Estlandia), 115 

 vulgaris (? MimeUa), 61, 62 

 vulvaria (Schizophoria), 143 



Waagen, W., 147, 148 



waageni (Enteletes), 146 



Walcott, C. D., 22, 27, 41, 44, 45, 46, 47, 48, 49, 50, 51, 



52, 53, 54, 80 

 waldronensis (Parmorthis), 129 

 wallowayi (Platystrophia), 66 

 Wattsella, 39, 125 

 Wattsellidse, 34, 124 

 wattsi (Wattsella), 121, 125 

 weedi (? Huenella), 160 

 weeksi (Swantonia), 159 

 wemplei (Finkelnburgia), 55 

 wesenbergensis (Porambonites), 102 

 whitfieldi (Austinella), 99 

 whittakeri (Dalmanella), 120 

 wichitaensis (Eoorthis), 51 

 wilkinsoni (Clorinda), 171, 172 

 Williams, H. S., 122, 132, 136 

 Wimanella, 50 

 wimani (Archiorthis), 81 

 Winchell, N. H., 99 



Winchell and Schuchert, 23, 95, 96, 142 

 winfieldensis (Eoorthis), 51 

 wingi ("Protorthis"), 47 

 wolfcampensis (Enteletes), 146 

 wordensis (Enteletes), 146 

 Wysogorsky, J., 69, 78, 80 



Yangtzeella, 30, 154, 157 



Zdimir, 177 



