Index to Genera. 



rj'i 



INDEX TO GENERA. 



Aforia 138, 139 

 AgelaciinuH 73 

 Agrioliraax 102, 105 

 Amblyacrum 153, 154 

 Ancistrosyriox 138 

 Antiplanes 129, 138, 139 

 Archatocidaris 7, 11, 19, 45-G8, 70, 



71 

 Astbenotoma 148, 149 



Bathytoraa 138, 147, 148, 151 

 Bela 160, 164 

 Bellardiella 165 

 Blfldaria 101, 102, 104 

 Borsonia 158, 161 

 Bothriocidaris 9, 10, 14, 15 

 Buccinum 164 



Caudelabrum 138 



Chauventia 164 



Cidaris 52, 55. 59, 61, G2, 67-71 



Cidarites 52, 55, 63, 64 



Clathurella 160, 165 



Clavatula 129, 152 



Clavu8 159, 160 



Ciinura 138, 139 



Cochlespira 133, 138, 139, 143, 144 



Cochlespirella 138, 144 



Cochlespiropsis n. gen. 138, 143, 



144 

 Cochlicopa 101-103 

 Corditra 158, 161 

 Crassispira 159 

 Cymatosyrinx 159 

 Cystocidaris 13 

 Cythara 165, 166 



Daphnella 165, 166 

 Discocysiis 11, 73 

 Dolichotoma 147 

 Donovania 124, 163, 164 

 Drillia 144, 153, 158, 150 



Echinocrinus 31, 45, 52, 53, 55, 58- 



63, 69, 70 

 Echiuwysiis 9, 10, 12-14 

 Echinodiscus 11, 73, 74 

 Echinus 59, 71 

 Endialoma 149 

 Eocidaris 7, 11, 55, 67-72 

 Eoclathurella 160 

 Eodrillia n. geu. 159 

 Eopleurotoma 127, 158 

 Eo;<urcula n. gen. 138, 145-147 

 Eotiaris 11, 74 

 Epalxis 158 

 Eucheilodon 138-140 

 Eucithara 166 



Euclathurella n. gen. 166, 167 

 Euconulus 101, 102, 105 

 Eucyclotoma 165 



Florestina 173, 174 

 Folinaea 164 



Fusitoraa n. gen. 161, 163 

 Fusus 156, 161, 163 



Genmula 127, 133-137, 139, 144, 151 



Genota 129 



Glyptotoma n. gen. 138-141, 165 



Halia 123 



Helenella n. gen. 167, 1G8 

 Helicodiscus 102, 104 

 Hetnipleurotoma 127, 133 

 Hernisurcula n. sen. 150 

 Homotoechus 18, 19 

 Hybochinus 24, 26 



Koninckocidaris 11, 74 



Lachesis 124, 163, 164 

 Lampsilis 103 

 Lepidechinus 9, 11, 20-22 

 Lepidesthes 11, 24-27 



