582 RHABDOPLEURID^. 



R. compacta is one of the many interesting forms for 

 a knowledge of which we are indebted to Mr. Hyndman's 

 enthusiasm and practical skill as a dredger. 



Habitat. On shells from deep water. 



Locality. Coast of Antrim (Hyndman) . 



" Multum adliuc restat operis, multumque restabit, nee ulli nato post 

 mille saecula prEecludetur occasio aliquid adjicieudi." — Seneca. 



