PODOCORYNID.E. 27 



Hab. On old univalve shells (Buccinum undatum, Fusus 

 corneus, Turritella communis, Nassa reticulata, Littorina, 

 Natica, Trochus zizyphinus, &c.) at low- water mark and 

 in deep water; generally distributed. 



[Ostend (Van Ben.) : Normandy and Brittany, always 

 on shells tenanted by the Pagurus (De Quatrefages) : 

 North America (Agassiz) .] 



Family III. Podocorynidse. 



POLYPITES sessile with a single verticil of filiform ten- 

 tacula round the base of a conical proboscis. 



Genus PODOCORYNE, Sars (in part). 



Der. Trof's, a foot, and Coryne, a genus of Ilydroids. 

 DYSMORPIIOSA, Philippi, Erichson's Archiv for 1842, 37, tab. i. fig. 3. 



GENERIC CHARACTER. Coenosarc consisting of a net- 

 ivork of creeping fibres, clothed with a polypary which also 

 forms a small cup-like investment round the base of the poly- 

 pites the network in the adult state filled in ivith chitine, 

 so as to constitute a continuous crust ; polypites sessile, 

 claviform, with a single verticil of filiform tentacula 

 surrounding the base of a conical proboscis ; gonophores 

 borne on the body of the polypite below the tentacles, 

 or on the common basis, and originating free, medusiform 

 zooids. 



Gonozooid : Umbrella bell-shaped ; manubrium shorter 

 than the umbrella, four-lipped, each lobe bearing a tuft of 

 vibratile thread-cells ; radiating canals 4 ; marginal ten- 

 tacles springing singly from bulbs ivithotit ocelli, the first 



