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delineation of it which allows me to conclude that it must be quite 
a distinct species of encrinite from any which are figured in this work. 
Until farther observations have been made, or more specimens have 
furnished us with additional information respecting this species, I shall 
propose that it be distinguished by a name, derived from the charac- 
teristic difference of its structure, and that it be therefore termed the 
Anastamosing Pentacrinite. 
LETTER XXV. 
REMAINS OF THE GLOUCESTERSHIRE, SOMERSETSHIRE, AND 
YORKSHIRE PENTACRINITES. 
W E have seen that the stratum of the Briaraean Pentacrinite, which is 
so abundant on the Dorsetshire coast, at the south-west extremity of this 
island, appears to have extended northward within a small distance 
of Bristol ; Mr. Harford's specimen having been found at Keynsham, 
between Bath and Bristol. On the other side of Bristol, on the banks 
of the Severn, the remains of pentacrinites of other species are met 
with ; the stratum which has been formed by the remains of different 
species of pentacrini appearing to have extended from Dorsetshire, 
and from where the Severn empties itself into the sea, to nearly the 
northern extremity of the island. This tract, which is of considerable 
width, comprises Gloucestershire, Northamptonshire, Warwickshire, 
VOL. II. L L 
