ZOOPHYTOLOGY. 67 
were bought from the Canaries by Mr. M‘Andrew two or 
three years ago. 
3. C. Johnsoni, n. sp.? Pl. XXIII, figs. 1—5. 
Polyzoary conical, about 0°25” in diameter. Area of cell subelliptical, 
widest about the middle. Raised margin surrounding the upper part or 
oval portion of the cell produced downwards within the area, so as to pre- 
sent a horseshoe form. Edge of lamina denticulate or jagged, surface 
granular. Back of polyzoary with raised radiating ridges, each of which is 
more or less distinctly carivate, with a row of minute elevations on either 
side of the keel. 
Hab. Madeira, Johnson. 
It is not improbable that this form will tw out to be 
identical with the C. denticulata of Conradi, and perhaps, 
therefore, with the O. Owenii, Searles Wood, of the Crag. 
It is clearly distinct from the true African C. Oweniti— 
1, in the conical form of the polyzoary; 2, in the horse- 
shoe shape margin to the upper part of cell; and 3, 
perhaps in the row of elevations on each side of the ridges 
on the back of the disc. The cells also in the centre of the 
disc are always completely filled up, as shown in the figure— 
a circumstance which I have not observed in any specimen of 
C. Owenit. 
4. C. Owenii, Gray (sp.) 
Hab. Madeira, Johns. ; Coast of Africa, Gray ; Fossil, Crag (?), 8. Wood. 
9, P. CYCLOSTOMATA. 
1. Gen. Tudbulipora. 
1. 7. druidica, n. sp. Pl. XXII, fig. 9. 
Crust dense, strong, thick; tubes short, upright, placed in more or less ” 
distinct circles. 
Hab. Madeira, Johnson. 
This appears to be an undescribed form of Tubulkpora or 
Diatopora, and is named from the peculiar arrangement of 
the column-like tubes. The determination of the genus 
must, however, be regarded only as provisional. 
