TABLE OF CONTENTS. 
Page. 
DEDICATION.iii, iv 
TABLE OF CONTENTS.v, vi 
Errata . vi 
PREFACE.vii-x 
INTRODUCTION.xi-xxii 
SYNOPSIS OF THE GENERA.xxiii-lxii 
DESCRIPTION OF SPECIES.269-518 
Modiomorpha. 269-293 
Goniophora. 293-306 
Microdon (Cypricardella). 307-313 
Nucola.313-324 
Nuculites. 324-328 
Leda .. 329-332 
Pal^eoneilo .. 333-349 
Macrodon. 349-351 
Ptychodesma . ........ 352-354 
Nyassa .... * . 354-358 
Grammysia. 358-384 
Euthydesma. 385-386 
Edmondia. 386-393 
Sfhenotus . 394-406 
Spathella . 407-408 
Conocardium . 409-415 
Panenka.416-425 
Glyptocardia . . 426-427 
Pr^cardium.427 
Paracardium . •. 428 
Pararca. 429-433 
Cardiopsis. 433 
Lunulicardium. 434-439 
Paracyclas . 440-446 
Schizoeus. 447-459 
Prothyris. 460-462 
Solemya.463 
