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URASTER SPINIGERA, Wright. 
Dimensions.—Diameter of the disk, one half-inch; length of 
each ray, one inch; breadth of a ray at its widest part, four- 
tenths of an inch. 
Description.—This beautiful little Star-fish was collected from 
the Forest Marble, near Road, Wilts, by Dr. H. F. Parsons, 
who forwarded it to me for description and figuring. The 
specimen came into my hands in a very bad state, but by care- 
fully backing up the rock with plaster of Paris, I have given 
it sufficient support to enable me to develop a considerable 
portion of its anatomy. 
The disk was small in proportion to the width of the rays 
and the diameter of the Star-fish. The rows of small ossicles 
which bound the margins of the wide ambulacral areas form an 
BE 2 
