INDEX OF GENERA AND SPECIES. 



295 



Page. 



Gypidula 193 



Gyraulus 34, 106, 153 



Gyroceras 59, 63, 154 



burlingtonensis 350 



constrictum 59 



cornutes 584'}' 



elrodi 1 54 



logani 63 



(Naatilus ?) inelegans 67 



rockf ordensis 59 



(Trochoceras ?) ohioensis ©7 



Gyroceratites 81 



(Nautilus) inelegans 81 



? (Trocheras) ohioensis 81 



Gyrodes 102,111 



conradi 102 



depressa Ill 



Gyrorbis 35 



H. 



Hadrophylluui 165 



gUns 165 



HaliotidsB 39 



Halobia 110 



(DaoneUa) lommeli 110 



Halysites 155 



catennlata 155 



Haminea 101,264 



rainor 101 



occidentalis 101 



subcylindrica 101, 264 



Haraites larvatus 220 



fremonti 343 



leai 49 



mortoni 14 



vemenilii 49 



flaploscapha 333 



(Cucnllifera) eccentrica 333 



grandis 333 



Harpaga tippana 48 



Harpes escanabiae 333 



Harttia 198 



matthewi 198 



llelcion 14 



alveolus 14 



carinatus 14 



patilliformis *. 14 



sexsulcatns 14 



subovatus 14 



Helcium alveoluni 21 



carinatum 21 



patelliforme 21 



sexsulcatum 21 



suboTatiim 21 



Helicerus 334,227 



fuegiensis 334, 227 



Helicidffi 106, 107, 135, 180 



Helicoceras 104, 135, 261, 265 



1 angulatum 31,49 



tortus 18 



mortoni var. teuuicostatum 104 



pariense 135 



tenuicostatus 19 



stevensoni 301, 265 



Helicotoma 191 



spl 191 



Page. 



Helix .28, 106, 107, 135, 137, 141, 153, 161 



(Aglaia) fidelis 180 



evansi 31 



evanstonensis ^... 141, 109 



kanabensis 137, 169 



leidyi 14, 107, 135, 170 



(Monodon?) dallii 180 



occidentalis 17 



(Patula) perspectiva 180 



sepulta 153 



peripheria 137, 170 



riparia 137, 170 



? sepulta 169 



spatiosa. 38, 221 



vetema 38, 170 



? vetema 107 



vetusta 106,161,169 



vitrinoides 17 



(Zonites) marginicola 170 



Helicoceras tortum 18, 49 



Heliolites 155 



elegans 155 



Helisoma 34,106 



Helonix thallus 50 



Hemiaster 96 



elegans 355 



1 humphreysanus IS, 96 



Hemicystites 78 



(Cystaster) granulatns 78 



stellatua 78 



Hemifusus homi 221 



Hemipronites . . 31, 56, 72, 78, 85, 89, 108, 109, 1 31, 177 

 chemungensis var. arctostri- 



ata 108 



crassus 31, 72, 85, 177 



crenistria 109, 131 



subplanus 56 



Hemitrypa ? 226 



Hercoglossa 104 



Heteractis duclosii 220 



Heteroceras 93,104,261,265 



? angulatum 49, 104 



cheyennensis 49, 104 



.' cochleatum 104 



cooperi 93 



? nebrascense 104, 265 



newtoni . 361, 265 



oweni 49 



tortum 49, 104 



? umbilicatum 104 



Heterocrinus 37, 55, 77 



(Anomalocrinus) incurvus 37 



crassus 91 



consti'ictus 77 



exilis 77 



exiguus 68 



heterodacty lus 77 



(locrinus) subcrassus 77 



jnveuis 77 



laxus 77 



simplex 77 



subcrassus 37, 55, 68 



Heteromyaria 97, 263, 267 



Hettaugia 262 



americana 76 



