CONTENTS. 



Echinoidea. 



Page 



Iiitroduction 3, 



Suborder Qypeastroidea 28, 



Fani. Fibulariidæ 28 



Echiuocyamus pusillus (O. F. Mull.) 28. 



Suborder Meridosternata 39 



Fam. Urechinidæ 39, 



Urechinus naresianus A. Ag 39, 



Plexechinus hirsutus Mrtsn 54, 



Faui. Pourtalesiidæ 58. 



Pourtalesia Jeffreysi Wyv. Thoms 58. 



— Wandeli Mrtsn 63 



Echinosigra (Pourtalesia) phiale Wyv. Thoms 68 



— — paradoxa Mrtsn 72 



Suborder Auiphisteruata 90. 



Fam. Spatangidæ 90. 



Page 



Aéropsis rostrata (Wyv. Thoms.) 90, 



Hemiaster expergitus Loven 97 



Brisaster (Schizaster) fragilis (Dub. Kor.) 108. 



Spatangus purpureus O. F. MuU _. . 123, 



— Raschi Loven 129, 



Echinocardium flavescens (O. F. Mull.) 132, 



— pennatifidum Norman 139 



— cordatum (Penn.) 145, 



Brissopsis lyrifera (Forbes) 152, 



Addenda et Corrigenda 169, 



Geographical distribution of the Echinoidea of the Nor- 

 thern Atlantic 177, 



List of the Echinoidea occurring in the Atlantic 192 



Index 195 



