286 Rev. Mr. Landsborouc.h's List of Zoophyte. 



dykes near the natural harbour at Southend, Arran. He brought a spe- 

 cimen along with him, and showed it to Mr. Alder, who was then in 

 Arran. He thought that it was a Lucernaria, but he could not give the 

 specific Dame till Sar's Fauna Littoralis Norvegice came into his hands, 

 and then he saw that it was the above-named. It had not before been 

 observed in Britain. It is not so showy as L. fascicular is, which proves 

 to be the same as L. quadricornis of Mtiller. 



( LASS POLYZOA. J. V. Thompson. 



POLYZOA INFUNDIBULATA. 



Family. — Tubuliporida. 

 1. Tubulipora. Lam. 

 The name is from tubulus, a tube, and 7toqos, a passage. 



1. Tubulipora patina. This is occasionally found on seaweeds and 

 shells. It often lurks among the strong fibrous roots of Laminaria 

 digitata 



2. T. hispida. Under this name Dr. Johnston includes two varieties, 

 which are so different, that I would be disposed to regard them as distinct 

 species. The more common one, I would call T. verrucaria, correspond- 

 ing with Dr. Fleming's Discopora verrucaria, which, however, included 

 T. patina also. The other I would call T. hispida. It is from deep 

 water, much rarer, and much more hispid than the former, without any 

 of those smooth vallies that mark T. verrucaria; and the border is a little 

 cupped, which is not the case in the other. 



Tubulipora orbiculus is now by Dr. Johnston regarded as a variety 

 of T. hispida. It is very common here on Laminaria saccharina. It is 

 much smaller than either of the preceding, and I think distinct. How- 

 ever, I readily give way to higher authorities. 



3. Tubulipora plwdangea. This is not common here. I have dredged 

 it in Lamlash Bay on Laminaria saccharina. 



4. T. Flabellaris. This is rare. I found it at Whiting bay, Arran, 

 inside of a broken valve of Solen siliqua ; and I once found it here in- 

 side of a valve of Modiola. It is very beautiful, like a Prince of Wales' 

 feather. 



5. Tubulipora serpens. This is very common. It is got on old shells, 

 but more frequently on seaweeds, especially JDesmarestia aculeata, and 

 Furcellaria fastigiata. 



Pustulipora dejlexa. Dredged in Lamlash Bay, on Maia horrida. 

 This is inserted, as it was not observed till the list was finished. 



2. Diastopora. Lamour. 



The name is from liccgmf&x, an interval, and ^oQog, a passage, intimat- 

 ing some distance between the pores. 



1. Diastopora obelia. This is rare ; I have got it on shells here and at 

 Millport, in Cumbrae ; but the finest specimens I have of it are from the 

 Island of Tiree, where it is pretty common on Pinfioe. 



