THE BRITISH FOSSIL BRACHIOPODA. 



253 



Mr. S. S. Buckman has also carefully defined the zones from which each species had 

 been obtained, an investigation which constitutes the most important feature of his 

 paper. 



I now give descriptions and figures of the new species. Of some few of them the 

 material has been scanty, and the discovery and study of more specimens will be neces- 

 sary before their specific claims can be considered as definitely established. I also 

 notice a few Portlandian species described by the Rev. Prof. J. P. Blake, so as to 

 complete the British series as far as the present state of our knowledge will permit. 



I am convinced that the number of so-called British Liassio and Oolitic species 

 described in my ' Monograph ' will require to be materially reduced, as some of them will 

 undoubtedly turn out, with further careful study, to be variations in form or synonyms 

 of some of the others. This should, however, be done only after careful consideration. 



1. Terebratula Morierei, E. Desl. 



Dav., Appendix to Supplements, Vol. V, PI. 

 XVIII, fig. 11, 11 a— d. 



Terebratula Morierei, D 



Annals and Mag. of Nat. Hist., 2nd ser., vol. ix, 



April, 1852. 



Desl. Descript. des Brachiopodes du Systeme Ool. Inf. du 



Calvados, Bull. Soc. Linn, de Normandie, vol. ii, 



pi. iv, fig. 6, 1857. 



— Pal. Franc., Brachiopodes Jurassiques, p. 244, pi. Ixv, 



figs. 1—8, 1874. 

 Walker. On the occurrence of Tereb. Morierei in England, 



Geol. Mag., Dec, 1878. 

 A. U. Kent. The finding of Tereb. Morierei at Bradford- 

 Abbas, Dorset, Prod, of the Dorset Nat.- 

 Hist. Club, vol. iii, p. 39, 1879. 

 (S. S. Buckman. The Brach. from the Inf. Ool. of Dorset, 

 Proc. of the Dorset Nat.-Hist. Club, 

 vol. iv, p. 48, 1882. 



Shell subpentagonal, rather longer than wide. Valves moderately convex, slightly 

 flattened, with a deep longitudinal angular sinus or groove in each valve, extending from 

 the beak and the umbo to the front, so that at the junction of the two sinuses in front a 

 deep angular indentation is produced ; beak moderately incurved and truncated by a 

 circular foramen ; deltidium small, beak-ridges sharply defined, leaving between them 

 and the hinge-line a well-marked false area. Surface of valves covered with numerous 

 concentric step-like ridges with flattened interspaces, covered with circular pits or perfo- 

 rations, giving the surface a granulated appearance. A large specimen measured 9 lines 

 in length, by the same in breadth, and 5 in depth. The shell is, however, usually smaller. 



