272 On the Organic Remains, fyc. [Sept, 
them to belong to the genus Prodncta , and compares them to the Products 
Scotica, depicted in Ure’s Geology. 
3. Specimens of a plaited variety of Terebratula, some detached, others 
imbedded in a matrix of bluish gray limestone (containing 6$ per cent, of pure 
white sand) . These shells differ little from those so abundantly found in the 
inferior oolite near Bath 
4. Many detached specimens of an equivalved transverse bivalve, transversely 
striated, and the valves crenulated on tlieir interior margin (c d .) Its external 
shape is similar to that of a short variety of Unio to which it was at first referred, bnt 
Mr. Everest points out the absence of lateral teeth and ridge, and inclines to refer it 
to the genus of fossil Trigonia. Some larger varieties resemble the Venus and Donat. 
Many of the shells have undergone considerable pressure. The figure b and c are 
too triangular in the drawing ; the lower part should be more rounded. 
5. Small very transverse equivalved bivalves of a black colour, belonging appa- 
rently to the genus Modiola. 
6. A variety of Area. The drawing somewhat too thick. 
7. Imperfect fragment of a large shell, which maybe a species of Donaxht 
Ostrea ? Mr. Everest supposes it an Inoceramus ? 
8. This and several of the following specimens are varieties of Ammonites, of 
which the specific names cannot be assigned for want of books and plates of reference. 
It resembles the Ammonites stellaris of the lias in Ure’s Geology. 
9. Resembles the Orbulite or the Naulilacea of Lamarck. 
10. Bears a strong resemblance to the Nautilus pompilius of the same author. 
Parts of the white original shelly substance adheres to the dark gray cast, and exhi- 
bits minute transverse striae on the interior surface, which are less marked on the 
interior cast the substance of the shell is exceedingly thin. 
11 and 12. Shew the distinct characteristics of the two commonest species of 
Ammonites: they are frequently mineralized by pyrites and iron clay. 
13 and 14. Represent the rounded nodules when first broken ; they belong to 
the same species as fig. 12. The annular ridges divide off into loops on the back of 
the whorls, ( Ammonites vertebralis of Sowerby ?) 
15. A species of Cirrus. 
16. This shell corresponds very closely with the plate of Sowerby’s Ammonia 
subradiatus given in Lamarck, which is a fossil of the Bath oolite. 
17. A variety of Ammonites not determined. 
18. Helix: resembles the Turbo ornatus of the lower oolite, (Sowerby.) 
19. Cast of a patelli-form shell. 
20. The drawing of this figure is faulty; the cone has too large an angle, ft 
appears to belong to the family Turbinacea , genus Turritella. 
21. Undetermined, perhaps Conus marmoreus ? L. 
22. Orthoceratites; enclosed in a nodule of iron clay. 
23. Detached Orthoceratites. This shell does not differ from the English one. 
24. Belemnites, common and of all dimensions ; the furrow is deeper than in 
jnost of the English specimens. 
25. Fragment of the back of a testudinous animal. 
