79 



II. SPECIES. PLATYCRINITES RUGOSUS. 



RUGGED, BROAD-PLATED, LILY-SHAPED ANIMAL. 



Specific Character. 



A Crinoidal animal, with an oval column, having round side arms at irre- 

 gular distances. Pelvis formed of three pieces, very flat, admitting at its upper 

 surface five depressed scapulae, from each of which an arm having two hauds 

 with three fingers each, proceeds; 



Synonymes and Reference. 

 G. CUMBERLAND, in Trans, of Geol. Soc. VOL. v. t. 5. fig. 10. 



Locality. 



In Mountain Limestone at Caldy Island, on the south coast of Wales; and 

 at the Mendip Hills. 



Description. 



Its column (fig. 11. to 16.) is of a similar figure to that of the former spe- 

 cies, but of a superior size. The exterior tubercles on the columnar joints are 

 also placed near one end of the greatest diameter of their elliptical circumfer- 

 ence. They are sometimes depressed at their summit, showing a tendency to 

 form new auxiliary side arms. 



The PEIVIS (fig. 2. to 6.) is. flat, considerably extending beyond the dia- 

 meter of the column, having at its lower surface the impression for the pur- 

 pose of articulation comparatively small. 



