CONTENTS. 



A MONOGRAPH OF THE BRITISH SPONGIAD.E. 



Preface . 



List of British Genera of Sponges 



Synopsis of Genera 



Order 1. Calcarea 



Grantia . 



compressa 



ciliata 



ensata 



tessellata . 

 Leucosolenia . 



botryoides 

 contorta 

 lacunosa 

 coriacea 



Leucouia 



mvea 

 fistulosa . 

 pumila 



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