ON NEW BRACHIOPODA Lit 
section may be traced thin bands of sandy clay, imme- 
diately overlying several compact beds of stone, (probably 
the ammonite bed,) for which the quarry was opened. 
Before leaving I colleeted some of these sands and elays to 
examine at my leisure. The result of my first examina- 
tion convinced me that they contained organic remains 
hitherto unknown, and the series of Brachiopoda I have 
succeeded in making from them are of no little interest. 
Great labour and perseverance are needed in the discovery 
of these little specimens, the completion of the series now 
noticed, with some others intended for a future paper, hav- 
ing required six visits to Dundry and an examination of 
upwards of two ewt. of sand under the lens, occupying me 
almost daily for several months. 
DESCRIPTION OF NEW BRACHIOPODA. 
Family—T EREBRATULIDE. 
Genus—ZELLANIA, Moore. —1854. 
Type—Zeı. Davıpsonın, Moore, Plate 1, fig. 1—3. 
Shell minute; unattached; foramen large and rounded, 
encroaching on both valves, or triangular ; valves depres- 
sed, convex, dorsal valve usually most so; external surface 
rugose, shewing slight tendency to striation, at others hav- 
ing concentric lines of growth, which are more defined on 
the ventral than on the dorsal vaive; valves articulate, 
Interior of dorsal valve granulated or smooth, shewing 
flattened granulated or smooth margin, surrounded by an 
elevated ridge, which commeneing under the dental sockets 
passes to the front of the shell, where it is partially ob- 
literated, and is there united by a central septum. 
Obs. Since reading my paper atthe Taunton Meeting, 
I have been enabled to determine more clearly the internal 
