﻿CRETACEOUS BRACHIOPODA. 



43 



Externally it bears some resemblance to Waldheimia Morrisii, Meyer ; but this last-named 

 species has a long loop, while that of T. Moutoniana is short, a circumstance with which 

 Mr. Lankester was not acquainted when he identified his Terebratula from Shanklin with 

 d'Orbigny's species. 



Position and Locality. Very abundant in the Lower Greensand at Upware, in 

 Cambridgeshire. Mr. C. J. A. Meyer has two large valves from the " Sponge-gravel at 

 Faringdon, and also a specimen from Hythe. In France it is a common fossil in the 

 Upper Neocomian at Caussols, at Saint Aubon and Saint Martin, near Escragnolles (Var), 

 at Sisteron (Basse-Alpes), at Berrias, Ardiche ; also in the Aptian at Gevaudan (Basse- 

 Alpes), at Gargas (Vaucluse). Mr. W. A. Ooster describes and figures T. Moutoniana 

 from various localities in the Alpes d'Uri, of Appenzell, Schwytz, Unterwalden, 

 Lucerne, and the Vallais. 



51. Terebratula Extensa, Meyer. Sup., PI. V, figs. 22 — 24. 



Terebratula Extensa, Meyer. Geol. Mag., vol. i, pi. xii, figs. 1 — 4, 1864. 

 — — Walker. Ib., vol. v, pi. xviii, fig. 5, 1868. 



Spec. Char. Oblong oval, broadest about the middle, tapering to the beak, slightly 

 curved or nearly straight in front. Dorsal valve moderately convex, most so at the 

 umbone, slightly elevated from the middle to the front in the shape of a flattened mesial 

 fold, much depressed at the sides. Ventral valve deeper and more evenly convex than 

 the opposite one, slightly flattened along the middle and towards the front. Beak short, 

 very moderately incurved and truncated by a circular foramen, separated from the hinge- 

 line by a narrow deltidium in one piece ; beak-ridges feebly defined. Surface smooth, 

 marked by concentric lines of growth. Loop short and simple, comparatively narrow. 

 Length 14, width 7, depth 6 lines. 



This species was well described and figured by Mr. Meyer in 1864, and is easily 

 distinguished from Ter. pr&longa and T. microtrema by the absence of biplication ; but, 

 although generically and specifically distinct, it bears a slight external resemblance to some 

 specimens of Waldheimia Celtica. 



Position and Locality. It occurs at the base of the "Folkstone beds " at Godalming 

 and in the Upper Neocomian or Lower Greensand at Upware. 



52. Terebratula Seeleyii, Walker. Sup., PI. VII, figs. 3, 3 «, 4. 



Terebratula Seeleyii, Walker. Geol. Mag., vol. vii, p. 561, Dec, 1870. 

 Spec. Char. Shell elongated oval, tapering from the middle to the beak and front, 



