—_ =. 
i al he 
39 
deep; the furrows extending about one half up the larger valve, 
not quite so much up the smaller, and giving the posterior part 
of the shell a somewhat elongated pinched appearance; central 
fold in the smaller valve narrow, but prominent. The young 
of this species, as is usual, are flatter, with the biplications 
proportionally wider apart and less conspicuous. 
This ab present rare species has probably been considered 
identical with, or a variety of, Terebratula Eudesi, Oppet. In 
fact Mr J. F. Watxer, F.G.8., told me that he had procured 
Tereb. Hudesi from the Oolite Marl of the Cotteswolds, and the 
first specimen that I found I considered merely a variety of 
that species. This species differs however from Tereb. Eudesi 
in the following respects:—It is proportionally longer, the folds 
closer together, furrows more marked in the larger valve, 
pinched appearance posteriorly and the beak short, with 
large foramen; while the beak of T. Eudesi is longer, is much 
incurved, and has a smaller foramen. The beak is the best 
distinguishing point between the two species. 
I have only found Terebratula notgroviensis in the Oolite 
Marl at Notgrove Station, Gloucestershire. It is very rare. 
P.8.— Since the above was first written I have found this 
species at Ravensgate hill, in the Oolite Marl, rather more 
frequent than at Notgrove, but the specimens are generally 
very poor. 
Waxpuermia (ZErLER1A) WITCHELLI, S. Buck. Plate IIT, fig. 
4a, b, ¢. 
Shell longer than broad, more or less regularly oval; valves 
convex, the larger more prominently so; no biplications; valves 
almost entirely smooth ; beak long, much produced, incurved ; 
small foramen; beak hanging over, but well separated from 
the umbo, showing the deltidial plates. 
This species, being found in the same bed as Waldheimia 
Leckenbyi, Waker, might at first be mistaken for it. 
It is however of totally different structure and proportions. It 
possesses no ridges of growth; it is not sub-angular, like W. 
Leckenbyi, but of an oval shape, more elongated, especially the 
