160 



greater or less distance from the foot, and sometimes the whole 

 length of the column. Examples are, Apiocrinites ellipticus from the 

 chalk, Pentaa'irms Briareus from the lias, Actinocrinites tessellatus, 

 Platycrinites gigas, and several undetermined species from the moun- 

 tain limestone ; also Cyathocrinites goniodactylus, and several unde- 

 termined species from the Dudley limestone. 



The sucker-footed locomotive Crinoids have the column destitute 

 of side-arms, and terminating at its inferior extremity in a blunt 

 point. Mr. Pearce subdivides them into Crinoideform and Comatu- 

 liform. 



The foUovi^ing table exhibits Mr. Pearce's views of the classification 

 of the family Crinoidea. 



Fam. 



Group, 



Division. 



Subdivision. 



Genus. 



Species. 



Non-loco- 

 motive 



locomotive' 



Solid-footed . 

 Root-footed.... 

 Branch-footed. 



Sucker-footed - 



Apioci'inites 

 Encrinites 

 Cyathocrinites 

 Eugeniacrinites 



Crinoideform 

 ComatuUform. 



Cyathocrinites 



Apiocrinites 



Pentacrinus 



Actinocrinites 



Platycrinites 



Cyathocrinites 



Actinocrinites 



Apiocrinites 



rotundus. 



moniliformis. 



tuherculatus. 



nutans. 



quinqueangularis. 



rugosus. 



ellipticus. 



briareus, jun. 



tessellatus. 



gigas. 



goniodactylus. 



moniliformis. 



fusiformis. 



" On an entirely new form of Encrinite from the Dudley Lime- 

 stone." By J. Chaning Pearce, Esq., F.G.S. 



The fossils described in this communication were discovered by 

 Mr. John Gray of Dudley. Mr. Pearce regards them as constitu- 

 ting a new genus which he proposes to name Pseudocrinites, inclu- 

 ding two species both having " the arms and fingers inserted in 

 bands, which commence just above the column and pass over the 

 plates of the head to its summit." The one form has two, the 

 other four ranges of " fingers." They resemble each other in 

 having " the columns at their superior part composed of rings, gra- 

 dually increasing in size towards the head. The plates of the head 

 are thin and broad, and marked on their outer surface by lines of 

 growth, and radiating ridges resembling the plates of the marsupite. 

 They are also furnished with four orifices of a lozenge shape, most 

 singularly inserted in the plates of the head, and their arms and 

 fingers are exceedingly short. The fingers are composed of two 

 rows of bones, each bone on the one side being inserted between 

 two of the opposite. These fingers appear to be placed in four rows 

 on each of the hands, and pass off from the head in a radiating di- 

 rection, commencing at the column and uniting at the summit." 

 Mr. Pearce names the first species Pseudocrinites bifasciutus, and the 

 gecond P. quadrifasciatus. 



