viii CONTENTS. 



APPENDIX. 



PAGE 



Leaia 115 



le aia leidyi h6 



Leaia Leidyi, Var. Wiliamsoni ana ' 1 1 7 



Le aia Leidyi, Var. S alteriana 119 



Beyrichia subarcuata 1 20 



BEYRICHIA PYRRHiE 121 



Candona (?) Salteriana 122 



Candona (?) Tateana 1 23 



Candona Rogersii 1 24 



Candona Emmonsii 1 25 



Candona globosa 126 



Candona Kotahensis 127 



Cypridea Valden sis 127 



Cypridea oblonga (?) 1 28 



Index 129 



Plates I — V, and Explanations. 



