43 
This species varies somewhat. It has a thicker, more convex 
form, which is however to be distinguished by its very coarse 
ribs from any form of Rh. concinna, 
This species characterises the upper beds of the Inferior 
Oolite, occurring along with Tereb. globata. I have it from 
Hampen, rather abundant, near Notgrove Station, Naunton, 
and other places, also Selsley and Rodborough hills, near 
Stroud. I have obtained it also from Blackford and Cadbury, 
in Somersetshire, but do not know of its occurrence in Dorset- 
shire. Jt therefore occurs in the zone of Parkinsoni in the 
Cotteswolds and south of the Mendips. 
EXPLANATION OF PLATE. 
Fig. la, b,c. Terebratula pisolithica, S. Buck. Pea Grit, 
Crickley Hill. My collection. 
Fig. 2. Beak of Terebratula ewides, S. Buck. To compare 
with Terebratula pisolithica, showing prominent 
beak ridges, and lateral compression of beak. 
Type specimen in my collection. This is the 
specimen figured by Davipson, Appendix to Sup., 
Plate XIX, fig. 4, but the character of the beak 
is not brought out. 
Fig. 3. Terebratula infraoolithica, EH. Desu. Copied from his 
Brachiopodes, Plate LVIII, fig. 7d, to compare 
with side view of Tereb. pisolithica as to beak and 
margin. 
Fig. 4a, b,c. Waldheimia Witchelli, S. Buck. Oolite Marl, 
Notgrove Station. My collection. 
Fig. 5a, b,c. Terebratula Notgroviensis, 8. Bucx. Oolite 
; Marl, Notgrove Station. My collection. 
' Fig. 6a, b.c. BRhynchonella hampenensis, S. Buck. Inf. 
Oolite, Naunton. My collection. 
