Dr. W. C. Mcintosh on the Zoopliytes of St. Andrews. 211 



Genus Filellum, Hincks. 

 Filellum serpens, Hassall ; Hincks, Brit. H. Z. vol. i. p. 214. 



Abundant on the stems of Sertulariaabietina a,nd H.falcata 

 from deep water. 



Fam. G. Coppiniidae. 



Genus Coppinia, Hassall. 



Coppinia arcta, Daljell ; Hincks, Brit. H. Z. vol. i. p. 218. 



Common on the stems and branches of Sertularia abietina 

 and Hydralhnania falcata. 



Fam. 7. Haleciidae. 



Genus Halecium, Oken. 



Halecium halecinum, L. ; Hincks, Brit. H. Z. vol. i. p. 221. 



Plentiful in deep water, though somewhat less common than 

 the next species. Young specimens under an inch in height 

 sometimes occur, which in spirit quite agree with the B,ev. A. 

 M. Norman's description of H. sessile (Hincks, I. c. p. 229, 

 pi. xliv. fig. 2), with, of course, the exception of the polyps. 

 In these cases the hydrothecaa do not seem to be fully developed ; 

 but they show the row of dots below the margin. Specimens 

 are also seen in which one or two of the hydrothecge are better 

 developed at the base of the stem, while all the rest are in the 

 condition described by Mr. Xorman. It would appear to be 

 doubtful if the mere elongation of the polyps would constitute 

 specific distinction, any more than the fact that the branches 

 are not in the same plane. Some are slightly ringed. 



Halecium muricatum, Ellis and Solander ; Hincks, Brit. H. Z. 

 vol. i. p. 223. 



This is the common Halecium from the deep water of the 

 bay. Most of the specimens show a ring or two on the stem 

 above the calycles. 



Halecium Beanii, Johnston ; Hincks, Brit. H. Z. vol. i. p. 224. 



Not uncommon in the coralline region, attached to other 

 zoophytes and to the tests of Ascidians. Young examples have 

 piles of little cups on the hydrothecae like those on the beautiful 

 southern H. tenellum, Hincks. 



Halecium lahrosum, Alder; Hincks, Brit. H. Z. vol. i. p. 225. 

 From the deep-sea lines of the fishermen. Kather rare. 



