34 
Reference and Synonymes. 
Bottle Encrinite—Parkinson’s Org. Rem. vol. 2. Pu. xrit. fig. 75. and 76. 
Strait Encrenite—(a young undeveloped species).—Parkinson’s Org. Rem. 
vol. 2. Pu. xii. fig. 34. and 39, 
Stag Horn Encrinite—(the base of A. ellipticus.)\—Parxinson’s Org, Rem. 
vol. 2. Px. xu. fig. 31. 38. 39. 
Chalk Bottles—vulgar name of the quarrymen. 
Luidii Lithopbylacii Britanicii,t, 13. fig. 1163. and 116+. 
Locality. 
The Chalk Pits of Wiltshire and Kent. 
Description. 
The elliptical shape of the columnar joints has induced me to assign to this 
animal its specific name. It is found only fossil, and always in a mutilated 
state in beds of the chalk formation. It is a small neat species, whose column 
was, I apprehend, in proportion longer than that of the former species. An idea 
of its probable appearance when perfect, I have endeavoured to convey, fig. 6. 
in the annexed plate, which representation is, however, less than the natural 
size, having also omitted the terminations of the auxiliary side arms, of whose 
formation I have not the slightest idea, and the tentaculated fingers as yet not 
detected. ’ 
The Coiumn of thisCrinoidal animal offers a new field for inquiry, since its 
joints appear to have consisted in a much greater degree of cartilaginous mat- 
ter and muscular integuments, especially in younger specimens. Perhaps their 
superior and lower surfaces alone, may, during the early stages of their 
growth, have presented a solid calcareous mass. 
The articulating surfaces at both extremities of each joint present ellip- 
tical areas (14. to 18.) bounded by slightly raised rims surrounding an inner 
oval, which again swells and becomes convex. In the direction of the 
longitudinal axis are placed two narrow ridges, one on either side, in the 
centre of which is a small round perforation, containing the alimentary canal. 
(18). It should be remarked that the direction of the longitudinal furrows, 
and indeed of the whole oval areas of the articulating surfaces, does not ge- 
