INDEX OF GENERA AND SPECIES. 



303 



Page. 



Narica 212,214 



diegoana 50, 31 3, 214, 221 



Kasaa 212,214 



intasti iata 212 



interstriata 214 



pedroana 813, 214 



Natica 208,210,211,212,213,214, 



217, 219, 223, 226, 236 



jicutispira 48 



alabainiensis 221 



alveata 311,213,221 



ambjgua 14, 48 



colliiia 319 



concinna 13 



erecta 221 



geniculata 313, 214 



gibbosa 211,213,221 



inezana 50, 217 



induTata 308 



nelia 336 



lunula 219 



minima 221 



moreauensis .,». 14 



obliqaata 13 



occidentalis 14,231 



ocoyana 313, 214 



OBtites? 211,213 



orientalis 310 



palndinaefonnis 13 



saxea 306 



?8calari8 310 



subcrassa 15 



syriaca 208 



texana ■- 319 



tuomeyana 16, 48 



Naticidae 102,111,132,264 



Naticina obliqna 221 



Naticopsis 25, 27, 46, 80, 86, 132, 136, 



152, 164, 165, 179 



sequistriata 80 



altonensis 86, 152 



hoUidayi 33 



? (Idonearca) humOis 80 



levia 67,80 



littonana var. genevievensis 40 



monilifera 152, 165 



nana 46,132,179 



nodosus 35 



(Platyostoma) acquistriata 67 



remex 136, 164 



subovatus 86 



(Trachydomia) nodosa 46 



var. hoUi- 

 dayii . . 46 



ventrica 86 



wheeleri 86,179 



var 152 



Nantilidaj 33, 63, 104, 121, 132, 265 



Nautilina 106 



Nautilus- - 25, 27, 29, 33, 39, 42, 45, 46, 65, 74, 84, 92, 93^ 

 104, 132, 144, 16.5, 179, 245, 258, 26o 



(?) 258 



angustatus 50, 306 



campbelli 37, 93 



chesterensis 35, 45 



Page. 



Nautilus (Cryptoceras) capax 39, 92 



? leidyi 39 



rockt'oideu.sis 40 



springeri 131 



danvillensis 144, 105 



dekayi 104 



var. inontanacnsis 104,205 



digonus 42 



(Discitea) disciforiuis 39, 84 



oinatus var. amplus 39 



(Discus) digonus 35 



planorbiformis 35 



sangamonensis 35 



tri.sulcctus 35 



divisus 121 



elegans 1 04 



var. nebrascen.ais 29 



(Endolobus) poramplus 39 



spectabilis 45 



eccentricus 19, 20,33 



forbesianus 179 



globatus 45 



lamarckii 222 



lasallenais 39, 87 



missourienais 179 



occidentalis 74 



planorbiformis 46 



ponderoaua 74 



sangamonensis 46 



(Solenocheilus) collectus 65, 84 



leideyi 84 



spectabilis - . - 35 



subglobosus 35 



(Temnocheilus) coxanns 84 



latus 87 



niotensis 39, 84 



winslowi 87 



(Temnochilns) coxanua 65 



latus 65 



winslowi 65 



tenuiplanatus 337 



(Trematodiscus) sulcatus 40 



trisulcatus 42 



winslowi 179 



Navicula bacilum 229 



scalprum 229 



semen 229 



siflcula ■ 229 



Sigma 229 



Neasra 101, 260, 263, 264, 272 



aequivalvis. 373 



fibrosa 48 



longirostra 360, 263 



moreauensis 101, 264 



ventricosa 101 



Neithea 215,218,200 



occidentaUs 315,218 



quinquecostata 266 



texana 218 



Nematocrinus 40 



Nemoarca .' 267 



cretacea 267 



Nomocardium 99 



Nemodon 98,267 



angulatum 267 



