180 UPPER, OR FLINTY CHALK. 



tions are observed, aflfording a passage for the radical processes. The 

 vertical section (fig. 20) exposes the cylindrical cavity fiUed with silex; 

 and the substance of the zoophyte traversed by numerous fibres, (or 

 tubes ?) some of which appear to terminate on the outer, and others, on 

 the inner surface : these are still more distinctly shewn in the horizontal 

 section, fig. 2L 



Mr. Parkinson represents a very fine example (Org. Rem. Vol. ii. Tab. 

 ix. fig. 1.) of the outer surface, in which the fibres are more regularly 

 disposed than in the Sussex specimens. 



The species is named in honour of Charles Konig, Esq. of the British 

 Museum. 



LocaUties. Common among the loose flints, beneath the turf, near 

 Lewes Eace-course. It appears to have been abundant in the upper 

 beds of the chalk, but seldom occurs in our quarries. 



25. Lunvdites ? Tab. xvi. fig. 22, 23, 24. 



The fossils here represented, are convex above, and concave beneath. 

 The concavity is smooth, with the exception of a few circular markings 

 which appear Hke lines of increase : the convex side is rough, and when 

 viewed through a lens, exhibits a porous structure. The specimens are 

 solid ; their constituent substance, a spathose carbonate of lime. 



These bodies, in their general appearance, resemble a species of lunu- 

 lites from Bologna, which Mr. Konig, from the perforations on its surface, 

 has named L. digitale; but they are destitute of the diverging radiated 

 sulci on the concave part, and these appear to be an essential character of 

 the genus *. 



Fig. 22. Perspective view of a specimen placed on its apex ; fig. 23, 

 the base or concavity ; fig. 24, a lateral view. 



Localities. Upper chalk. South-street, Lewes. 



• Luniilites. Char. Gen. " Polypier pierreux, libre, orbiculaire, aplati, convexe d'un cot^, 

 concave de I'autre. Surface convexe, ornee de stries rayonnantes et de pores entre les stries : 

 des rides ou des sillons divergens a la surface concave." Animmix sans Vertebres, Tom. ii. p. 194. 



