257 



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 cha- 

 racteristic difference of its structure, and that it be therefore termed 

 the ANASTAMOSING EXCRINITE. 



LETTER XXV. 



REMAINS OF THE GLOUCESTERSHIRE, SOMERSETSHIRE, AND YORK 



SHIRE PENTACRINITES. 



WE 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 Porsetshire, 

 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. LL 



