218 



INDEX. 



Page. 



Exopfyra ponderosa 1'2 



ravisti'lla stcll;ita 07 



Favositts divergens 79 



? 67 



Fusulina cylindrica 96 



General observations 5 



Glaitconomc ncrcidis 105 



Goniatites ? 161 



Goiiiobasis Nebrasceusis 213 



tenera 212 



teuiiicarinata 212 



GraiKilocrhnts lotohJasfiis - SO 



Graptolitesbalcs of Norman's Kill, N. Y., age of 19 



Grajjiolithns hijjjuiformis 63 



Graptolithuspristis? 05 



quadrimucronatns 65 



GrajyioUtlius I'ainiihis ; 02 



Gryphea Pitcheri 171 



HtUcoccras parieuse 203 



Helix Leidyi 211 



Hemipronites crinistria 124 



Hyolithes primordialis? 37 



Idoiiearca cleprcssa 183 



Tuocei'amus Barabini 180 



Inoccramus crassalalus 100 



dimidins 181 



Inoceramiisdeforinis 179 



Inocerannis flaccidus 178 



Icoceramiis fragilis 178 



problematicus 177 



Jurassic period, fossils of 102 



observations on 17 



Leiopistha ( Psilomija ) Mccid i 186 



Leiopistba(Cymella) undata 187 



Lepcrdilia hivia 58 



Lepta>na sericea ? 70 



Lima Wacoensis 176 



Liiigida mnnlicula 52 



Liugula siibspatula 169 



Lispodestbes, generic description ■. . 191 



Lispodcsthcs n iqHialis 192 



Ihigidiftra 192 



Litbostrotiou Whitneyi 103 



Lopbopbylliim proliferum var, sauridens . 101 



Lower Silurian age, fossils of 32 



Lucina subundata 184 



Maclurea ? -. 77 



Macira ? hicompta 185 



JlacrocheUus aiigidifcrns 160 



Marcou, Prof. Jnlcs, foot-note concerning his 



priority of certain specific names 125 



Meekella stiiatoeostata 12C 



Mcgalaspis helcmnurus 59 



Mesozoic age, fossils of 162 



Modiolopsis f 76 



Page. 



Monoptcria Marian 151 



Monticulipora Dalii 06 



Myaliua recurvirostris 152 



Myaliua? Swallovi 152 



Myophoria ambilineata 166 



Naticopsis nana 159 



Nantiluslatus? 161 



Springeri ? ICl 



Neritina (Velatella) carditoides 189 



XerHhia phascolaris 167 



Norman's Kill, near Albany, N. Y., age of 



shales at 19 



Observations, general, on collections 5 



Olenelliis Gilbcrli 44 



ffoiccin 47 



Orthis biforata var. lynx 74 



Electra ? 55 



occidentalis 70 



pecosii 125 



plicatella 72 



testndinaria 72 



Orthoceras colon 56 



Ost.rea cortex 170 



Ostrea prudcntia 171 



striyilccula 163 



Pentacrinns asteriscus 162 



Permian period mentioned 17 



Periods, geological, table of 6 



Pht/Uograplus Loringi 51 



Physa Bridgerensis 210 



Physa p?eroiHrt/is 211 



Pinna peracnta . - 151 



Pinna petrhia 182 



Pianorbis Utahensis 209 



? 210 



Platyceras Nebrascenso 159 



Platycrinus ? 81 



Pohjpora siragiila 108 



Primordial period, fossils of 32 



observations on 7 



Prodnctua costatus 109 



longispinus 118 



Mexicanns 120 



mnricatns 120 



Nebrascensis 116 



parvus 83 



Prattenianns 113 



pnnctatns 114 



semireticulatns Ill 



Psiloniya Meekii 186 



Ptyeboparia Kingii 40 



Eaphistoma trocbiscns 77 



Receptaculites '? 50 



Eetzia Mormon ii.- 141 



Ehombipora lepidodendroides 99 



