392 NOTES ON THE HYDROIDS OP PLYMOUTH. 



Family HYDRACTINIID^. 



Hydractinia echinata, Fleming. 



Fairly common on shells of Buccinum undatum, from ten to twenty 

 fathoms. Duke Rock. Mewstone. Bigbury Bay. 



Family PODOCORYNID^. 



PODOCORYNE CARNEA, Sars. 



A few specimens from old shells, ten to twenty fathoms. The 

 Medusa is common outside the Breakwater in summer months. 



Family CORYNID^. 



CORYNE VAGINATA, HincJcs. 



Several fine colonies of this species from rock pools in Wembury 

 Bay, June and July, 1890. Also on previous occasions from Drake's 

 Island and Bovisand Bay. Gonophores May to August. 



CoRYNE pusiLLA, GaeHuer. 



Drake's Island, May, 1890. A good specimen, with gonophores, 

 from Whitsand Bay, July 11th, 1887, appears to belong to this 

 species. 



CoRYNE FRUTICOSA, Hincks. 



A few polypes, without gonophores, collected by Mr. Heape, 

 appear to belong to this species. 



Syncoryne eximia, Allman. 



A fine specimen, with gonophores, on an old piece of rope, one 

 mile south of the Mewstone, May 11th, 1889. 



Family MYRIOTHELID^. 



Myriothela phrygia, Fahricius. 



This fine and interesting species is common in the neighbourhood 

 of Plymouth. The gonophores are large and ripe from May to 



