A6 
TEREBRATULA ovata. 
TAB. XV.—F. 3. 
Spec. Cuar. Ovate or oblong-ovate, depressed, 
smooth; small valve flattish, slightly pentan- 
gular. 
Samu size as the last, but longer than wide; the beak 
being protruded gives it an ovate form. 
Chute, near Heytesbury, in Wiltshire,-to which place 
I was conducted by the family of my late worthy friend, 
Mr. Cunnington, affords a most curious variety of extrane- 
ous fossils, mostly agatized, among which this shell is 
found. Some parts of the shell are whiter than others, 
owing to a little Carbonate of Lime. ‘The rings of Vermi- 
cular shells are conspicuous, as is frequent with agatized or 
siliceous shells found in green sand. The spot where these 
shells are found is not above half an acre square, and after 
plowing, it is astonishing what an abundance of organic 
remains appear, as if some great Cabinet had been thrown 
away there, with some perfect, some mutilated, and some 
obscure subjects. I was so engaged an hour there, that I 
used all the time I had to find what I could, promising to 
notice the surrounding country another time. : 
TEREBRATULA punctata. 
TAB. XV.—F. 4. 
Spec. Cuar. Oblong, depressed; valves equally 
convex, edge straightened at the front: the 
whole surface finely punctated. 
Lenern one inch and a quarter; width one inch. The 
very minute punctums are arranged in undulating lines, 
these, although to be found in most of the smoother species 
under the usual coat, are most conspicuous on the surface 
in this. 
Abundant in the same dark Limestone, sent me by Lady 
Aylesford, with No. 2, at a place called Hornton stone 
quarry ; they are sometimes sattiny, and white externally, . 
and sometimes of a dusky brown, enclosed in Limestone of 
