42 THE CRAG POLYZOA. 



4. L. WOODIANA (n. sp.) PI. VII, figs. 1 and 3. 



Cellulis ovatis raarginem circa serie unica punctorum ornatis, basim versus irumersis, 

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

 Orificio semicirculari, labio inferior! recto, medio inciso, 4 6 spinis marginalibus supra 

 arrnato. Aviculario minimo in partem cellulae suprernam 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 urnbo 

 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 Tdlina, 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- 

 los&, vel obscure puncturata. Orificio lunate transversim elongate, elevato, libero, 4 6 

 spinis marginalibus supra arrnato ; aviculario elevato, uno latejre 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. fl, Hlol/., Seerinde, p. 62, pi. iii, fig. 11. 



LEPRALIA CILIATA, Johnston; Busk, Brit. M. Cat., part ii, p. 73, pi. Ixxiv, figs. 1, 2. 



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



FLUSTRA GENISII, And., Expl., p. 239, Savign., Egypt, pi. ix, fig. 5. 



CELLEPORA CBENILABRIS, Reuss (op. c., p. 88, pi. x, fig. 22). 



Habitat. Cor. Crag on shell, 8. W., J. S. B. Vienna Basin, Reuss. (Recent) cosmo- 

 polite. 



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



