LUCEENARIANS OF PORT ERIN. 159 



they were attached to the undersides of stones on the S. 

 side of Port Erin Bay, where Bepastrum also occurs. 

 During the recent vacation I made a most careful search 

 in the same locality but failed to find a single specimen. 

 On the first occasion in my ignorance of the "points" of 

 a Lucernarian, I did not observe in the living animal the 

 presence of primary tentacles, but in one of the three 

 specimens these are now plainly enough to be seen, but in 

 the others which are smaller and were not preserved in 

 an expanded condition I have been unable to ascertain 

 whether these important organs are present or not. Now 

 in HaJicJystus auricula additional tufts of tentacles seem 

 not uncommon, and accordingly, until I have seen more 

 specimens I hesitate to conclude that what certainly 

 appear to be genuine primary tentacles (retaining the 

 original tentacular structure instead of being modified 

 into marginal anchors as in H. aiiricula) are really normal 

 structures. 



If on the other hand these primary tentacles are merely 

 individual abnormalities, and if I am right in my inter- 

 pretation of its internal structure, then this species must 

 be relegated to the genus Lucernaria (as at present re- 

 stricted). In the approximation of its arms in pairs it 

 approaches L. quadricornis, Miiller, but its comphcated 

 gonads differ from those of that species. I at first took 

 the Port Erin specimens to be small and somewhat abnor- 

 mally shaped L, quadricornis, before I had discovered the 

 primary tentacles ; they are referred to under this name 

 in the L.M.B.C. Annual Eeport, 1892 (p. 33). I now 

 append a description of the species : — 



Haliclystus sp. ('? n. sp.) 

 Umbrella somewhat conical, passing gradually into the 

 stalk without any marked distinction. Sub-umbrella 

 cavity very shallow. 



