74 BRITISH HYDROID ZOOPHYTES. 



Family PLUMULARIID.E. 



Antennularia antennina, Lmneeus. (PLATE VIII.) 



2 dry specimens and 1 in liquid. 



SPECIMENS This species has been well named 

 68, 69, 7O. the " Antenna-like " hydroid. 



It throws up long, straight stems, and at 

 short intervals, gives out in nodes, like the 

 plant Equisetum, short, fine, radiating branches, 

 bearing on the upper side only, shallow 

 tea-cup-like receptacles. Nematophores are 

 plentifully distributed, one on either side 

 above, and one below each polypite, with 

 others on the stem. The capsules are oval 

 with an oblique truncated aperture. They 

 may be seen on the specimen preserved in 

 liquid, likewise the fine branches and 

 receptacles. 



This species is generally found growing on 

 scallop valves in deep water, and is common 

 off Hastings. 



Two very curious species of Nudibranch 

 Molluscs, Doto Coronata and D. pinnatifida, 

 feed upon the polypites, and also attach their 

 spawn to the stems. 



