42 THE CRAG POLYZOA. 



4. L. WooDiANA {n. sp.) PI. VII, figs. 1 and 3. 



Cellulis ovatis marginem circa serie unica punctorum ornatis, basim versus iramersis, 

 supra liberis, suberectis ; facie antica granulosa umbone elevato supra excavato munita. 

 Orificio semicirculari, labio inferiori recto, medio inciso, 4 — 6 spinis marginalibus supra 

 armato. Aviculario minimo in partem cellulae supremam utrinque posito. 



Cells ovate, immersed below ; upper half free, raised ; surface granular ; a single row of 

 punctures round the margin ; orifice semicircular above, lower border straight, with a 

 narrow fissure in the middle ; 4 — 6 marginal spines above ; a broad prominent umbo 

 below the orifice, with a cup-like cavity above it; a very minute avicularium on each side 

 of the orifice on the highest part the cell; ovicell depressed. 



Habitat. — Cor. Crag, on Tellina, S. W. ; {'Recent) Belfast Bay, on Venus rugosa. 

 Rev. T. Hincks. 



This peculiarly formed species is characterised by the orifice, which has a straight lower 

 border, having a narrow slit or fissure in the middle ; and by the circumstance that below 

 the orifice the surface is smooth and hollowed into a sort of cup, supported beneath by a 

 broad eminence. The cells vary considerably in size in different parts of a patch. 



5. ? L. ciLiATA, Linn. PI. VII, fig. 6. 



Cellulis convexis, subhexagonis medio porum lunatum ostendentibus ; superficie granu- 

 les^, vel obscure puncturata. Orificio lunato transversim elongato, elevato, libero, 4 — 6 

 spinis marginalibus supra armato ; aviculario elevato, uno latere posito. Ovicellula sub- 

 globosa, ostio simplici. 



Cells quincuncial, convex, subhexagonal, surface granular, or obscurely punctured ; 

 orifice crescentic, elongated transversely, raised and free ; 4 — 6 marginal spines above ; a 

 lunate pore above the middle of the cell; a raised avicularium on one side of the cell; 

 ovicell rounded; peristome not thickened. 



Cellepora CILIATA, Linn.; Fab. (Faun. Grcenl., p. 434, No. 441). 



EscHARA VULGARIS, var. j3, Moll., Seerinde, p. 62, pi. iii, fig. 11. 



Lepralia CILIATA, Johnston; Busk, Brit. M. Cat., part ii, p. 7^, pi. kxiv, figs. 1, 2. 



L. iNSiGNis, Hassall, Ann. Nat. Hist., VII, p. 368, pi. ix, fig. 5. 



Flustra Genisii, Aud., Expl., p. 239, Savign., Egypt, pi. i.x, fig. 5. 



Cellepora ceenilabkis, Reuss (op. c, p. 88, pi. x, fig. 22). 



Habitat. — Cor. Crag on shell, S. W., J. S. B. Vienna Basin, Beuss. (Becent) cosmo- 

 polite. 



The resemblance at first sight between the fossil form and the more ordinary condition 



