136 
I. SPECIES. MARSUPITES ORNATUS. 
ORNAMENTED PURSE-LIKE ANIMAL. . 
Specific Character. 
A Marsupial animal, having the central plate, at the base of its subglobose 
body containing the viscera, pentagonal, supporting at its edge five similar 
costals, which admit at their superior angles five hexagonal intercostals, into 
the angles of which five scapulz are inserted sending off the arms. 
All the plates ornamented by ridges proceeding from the centre, and form- 
ing angular markings near the corners. 
Synonymes. 
. TORTOISE Encrinite. PARKINSON'S Organic Remains, Vol. m. Pr. ۰ 
fig. 24. MANTELL'S Manuscript on the Southdown fossils, t. xvi. fig. 6, to 10. 
14, and 15. | . 
4 Locality. 
Offham Chalk-Pits, near Lewes ; Clayton Chalk-pits, Hurstpoint, Sussex ; 
Preston Chalk-Pits, near Brighton ; (for the above localities, I am indebted to 
Mr. MANTELL) ነ Chalk-Pits of Kent ; and Chalk-Pits, near Warminster. 
Description. 
I have given the specific name ORNATUs to this species, (the only one 
known to me as belonging to this genus) on account of its plates being beauti- 
fully ornamented with radiating markings. I am indebted to Gipson 
MANTELL, Esq. of Lewes, in Sussex, whom I had occasion to mention in my 
observations on the genus Marsupites, for a fine specimen of the body of this 
animal, which has enabled me, in conjunction with an examination of some 
` 
