326 



INDEX OF GENERA AND SPECIES. 



T. 



Page. 



Toldia 33,44,73,90,98,263 



evanai • 98, 2G3 



impressa 49 



Ifcvistriata 44 



microdouta 70, 98 



(Palseoueio ?) carbonaria 69, 9U 



* scitula 98 



stevensoni 69, 90 



Bubscitola 33, 73 



ventricosa 98 



Z. 



Zamit«B occidentalls 346 



Zaphrentis 58, 62, 109, 117, 119, 130, 131, 



148, 155, 165, 177 



f 58,130 



acutus 117 



oalceola 165 



cylindrica 243 



elliptica 1 19, 165 



excentrica 109, 131 



gibsoni 177 



glans 119 



haysii 36 



mcfarlanei 63 



tmultUamella 109, »3a 



Page. 



ZapLieutis piiscua 167 



lafinesquii 155 



recta 63 



. spinulifera 125 



BtauHburyi 109, 333, 243 



Zaptychius 188, lit? 



civrbonaria 180, 188,197 



Zeacriuus 23, 42, 43, 45, 72, 82, 84, 85, 118 



! armiger 64 



crassus 45 



discns 33,45 



(Hydreionocrinas ? ) acantho- 



porus 64,87 



1 mucrospinus 72 



peraDgalatus 118 



planobracbiatus 33, 43 



sacculus 118 



var. concinnus 118 



troostanas 33,42 



ZellinidsB 261 



Ziphosnra 61 



Zoopby ta 55, 66, 57, 58, 119, 257 



Zygospira 57,78 



cincinnatiensis 78 



headi 79 



modeeta 78 



anbooDcava 57 



