204 Rev. T. Hincks on the 
Family Tubuliporide. 
Sromatopora, Bronn. 
Stomatopora major, Johnston. 
On shell, rare. 
(Bergen, Britain, Brittany.] 
Stomatopora diastoporides, Norman. 
On shell. 
[Entrance of Baffin’s Bay, Gulf of St. Lawrence, Britain.] 
Stomatopora tncrassata, Smitt. 
A specimen occurs exhibiting the anastomosing habit 
which is characteristic of British examples of this species. 
Cumshewa; Houston-Stewart Channel. 
[Spitzbergen, Nova Zembla, Kara Sea, Britain. ] 
TuBULIPORA, Lamarck. 
Tubulipora lobulata, Hassall. 
Houston-Stewart Channel, on shell. 
{Scandinavian coasts, Britain. | 
Tubulipora perfragtlis, n. sp. 
Zoarium adnate, white, and composed of very delicate ma- 
terial, consisting of a short stem, widening upwards, which 
divides dichotomously into two principal branches, these again 
subdividing dichotomously, the lower segments curving down- 
wails so as almost to surround the point of origin and the 
stem: and giving to the whole colony a flabellate form ; 
brandhes slender at the base, expanding upwards, thickly 
covered with the cells, occasionally a second expansion origi- 
natimg from the summit of the first, to which it is connected 
by @ narrow base. Zowcia crowded on the branches, radi- 
ately disposed, very slender, with a speckled surface, a large 
porti6ii of the length Sec uid crbhorizental, sometimes con- 
nate and in companies of 2-4, sometimes single and detached ; 
orifice orbicular, unarmed. Gonocyst an irregular inflation of 
the surface of the branch, minutely punctate. 
On shell. 
This form has some points of resemblance to Tubulipora 
capitata, mihi (‘ Annals’ for August 1881, “ Contributions 
