256 Meyer—Lower Greensand Brachiopods. 
species as Terebratula oblonga, T. tamarindus and Lingula 
truncata; and, at the same time, limit those of the Upper 
Greensand, with the single exception of 7” capillata, D’ Archiac, 
to such species as are common to Warminster, to Cambridge, 
and a few other typical Upper Greensand localities. 
Is then the evidence so fully conclusive with respect to the 
‘ Tourtia’ (the supposed foreign equivalent of our Farringdon 
Sponge-gravels), as to leave no doubt as to its position in the 
Cretaceous series? Are we to regard that also as possibly a 
Lower Greensand deposit? or may the presence of Lower 
Greensand species in that bed be accounted for by the known, 
but scarcely recognized, difference between the lateral extension 
of species and their vertical range ? 
EXPLANATION OF PLATES XI. AND XII. 
Pirate XI, 
Fig.1. Terebraiella Fittont, sp.nov. An adult specimen, of the most usual 
form and size; from the pebble-bed at Tewsley, near Godalming. 
2a,b,¢c. T. Fittoni. Another specimen, with lines of growth strongly 
marked. 
3 a,b. T. Fittoni. A fine specimen, from Hurtmore, W. of Godalming ; 
the largest in my collection. 
4a,b,c. T. Fitton. A specimen of the form that approaches to 7. 
Beaumonti, D’ Archiac. 
5&6a,b. T. Fitton. Specimens with few ribs; greatly resembling 
T. quadrata, Sow. 
7a,6,8&9 a,b. T. Fitton. Enlarged figures, to show the style of 
marking and other features. 
10. 7. Fitton. Internal cast. 
ll. Terebratula quadrata, Sow. Outlines of the original figures, intro- 
duced for comparison with the above. 
12 a,b. T. oblonga, Sow. Ventral valve, from the pebble-bed. 
3 a, b. ieee Ventral valve, from the Bargate-stone; a young 
shell. 
14, T. oblonga. A specimen from the pebble-bed, enlarged. 
15. T. oblonga. Ventral valve, from the Kentish Rag of Maidstone; of 
the natural size. 
16, 7. oblonga. A specimen from the Red Sponge-gravel of Badbury 
Hill, near Farringdon, accompanied by 7. Tornacensis, var., and 
T. Menard. 
17. Terebratella (?) trifida, sp.n. (Described in the ‘ Geologist’ for May, 
1864.) Dorsal valve, on a fragment of Bargate-stone, together 
with a single valve of Terebratulina striata. 
18. 7. (°) trifida, Exterior of a ventral valve, enlarged. 
19. 7. (?) trifida. Side-view of the same, slightly enlarged. 
20a. T. (2) tryfida. Interior of a dorsal valve, enlarged, showing the 
medial septum. 
20 b. T. (?) trifida. Front view. 
20 ec. T. (?) trifida. Side view. 
21, 22. T. (?) trifida. Exteriors of dorsal valves, enlarged. 
23. T. (°) tryfida, Ventral valve, enlarged. 
