692 
Proceedings of the Royal Society 
6. Flustra foliacea, Linn, (sp.) 
Eschar a foliacea, Linn. Ed. 10. 
Flustra foliacea, Linn. Ed. 12; Solander ; B. M. Cat.; 
Auctt. 
7. Retepora beaniana , King. 
Retepora cellidosa (pars) Anett. 
Retepora beaniana, King ; B. M. Cat. ; Hincks, &c. 
Retepora cellidosa, formA 
beaniana, Smitt. 
Eschara beaniana, Smitt. 1878. 
8. Salicornaria farciminoides. 
Sal. farciminoides, Solander; B. M. Cat.; Cuvier; Auctt. 
Eschara and Flustra fistulosa (pars), Linn. 
Cellaria salicornia, Lamx ; Lamarck, Ac. 
C ellaria fistulosa, Searles Wood; Hincks ; Smitt, &c. 
9. Lepralia unicornis var. ansata, B. M. Cat.; Auctt. 
Schizoporella unicornis, Hincks. 
10. Porella levis, Fleming (sp.) 
Cellepora levis, Fleming. 
Eschara teres , Bk. 
Eschara levis, Sars. 
Porella levis ( Eschara forma), Smitt; Hincks. 
The 17 species above enumerated include 13 Cheilostomata and 3 
or 4 Cyclostomata. The latter are remarkable for their small size 
and strongly calcified condition ; as were also some of the Lepralioid 
forms. 
All are well-known northern forms, and none present any peculiar- 
ities worthy of remark, except that the two species of Bugula are repre- 
sented by very luxuriant specimens. The condition also under which 
the specimens of Porella levis occurred was rather curious; the two 
or three fragments were, so to speak, enclosed in, and at first sight 
continuous with, the ramifications of Cellepora ramulosa, and were 
of the same diameter, so that at the first glance the growth appeared 
to be formed of two distinct kinds of cells. 
All the species, it may be remarked, range as far south as the 
Mediterranean. 
