182 UPPER, OR FLINTY CHALK. 



forination, that portions of two or three species, are the only examples 

 hitherto found in Sussex. Of these the most important is the bottle en- 

 crinite of Parkinson, (Apiocrinites of Miller,) which we shall now proceed 

 to examine. 



26. Apiocrinites ellipticus. Tab. xvi. figs. 3. 12. 

 Miller's Crinoidea, p. 34. 



" A crinoidal animal, having a column composed of oval joints, 

 articulating by a transversely grooved surface; the two upper joints of the 

 column enlarged, sustaining the pelvis, costae, &c. The column provided 

 with auxiliary side arms. Base formed by numerous irregular columnar 

 joints, sending off fibres for adhesion to other bodies." (Millers Crinoidea, 

 p. S3.) 



The different parts of this animal were first described by Mr. Parkin- 

 son, under the various names of bottle, straight, and stag's horn encrinite ; 

 and have since been accurately investigated by Mr. Miller, who considers 

 them as belonging but to one species, which he has placed in his first 

 division of the Crinoidea; in the same genus with the celebrated Pear 

 encrinite of Bradford. 



The column of this species consists of smooth ossiculae, somewhat 

 enlarging in the middle; their articulating surfaces being elliptical, finely 

 granulated, and having two narrow transverse ridges, in the centre of 

 which is the small perforation containing the alimentary canal. 



The pelvis or body, is of a tumid utricular form, and is divided into 

 separate ossiculae of various shapes, to which the names of ribs, clavicles, 

 and scapulae, &c. have been applied by the authors above quoted. 



The specimens in my possession, were discovered too late to admit of 

 insertion in the engravings. 



The entrochites delineated in Tab. xvi. do not exhibit the transverse 

 ridges generally observed on the areae of the columnar joints, but in other 

 respects they perfectly correspond with those of the present species. 



Fig. 3, consists of sixteen vertebras, some of which are partially dis- 

 united; the articulating surfaces are smooth and even, the central perfora- 



