74 BRITISH CRETACEOUS BRACHIOPODA. 



Warminster, and therefore not only specifically and stratigraphically distinct from 

 Rcemer's T. longa, but belonging to a different section of the great genus Terebratula. 



T. Celtica appears easily to be distinguished from other Cretaceous species by its 

 peculiar elongated shape. 



Rcemer's specimens are said to be from the Hilsthom of Elligser Brinkes. 

 Plate IX, figs. 32 — 34. Examples from the Lower Green Sand, near Shanldin Bay, 



Isle of Wight, in the collection of Mr. Morris ; several fine 

 specimens have also been collected in the same locality 

 by Mr. S. Saxby, of Bonchurch. 



33 Waldheimea (Terebratula) tamarindus, Sowerby. Plate IX, figs. 26 — 31. 



Terebratula tamarindus, Sowerby. Trans, of the Geol. Soc, vol. iv, p. 338. pi. xiv, 



fig. 8, 1836. 



— — Morris. Catalogue, 1843. 



— subtrilobata, Ley merle. Mem. Soc. Geol. de France, vol. v, p. 12, 



pi. xv, figs. 7, 9. 



— tamarindus, Bronn. Index Pal., p. 1253, 1848. 



— — UOrbigny. Pal. Franc., Terrains Cretaces, vol. iv, p. 72, 



pi. 505, figs. 1 — 10, 1847: Prodrome, vol. ii, p. 85, 



1850. 

 Waldheimea tamarindus. A Catalogue of the Fossil Terebratulse in the British 



Museum, p. 62, 1853. 

 Terebratula tamarindus, Sharpe. Quart. Journ. Geol. Soc, vol. x, p. 191, 1853. 



Diagnosis. Shell very variable in shape, nearly orbicular, oval or obtusely five-sided ; 

 surface smooth, marked by a few concentric lines of growth. Valves almost equally con- 

 vex, without either sinus or mesial fold ; the ventral or perforated valve is generally the 

 deepest ; margin very obtuse and slightly fiexuous, forming a small convex curve in front ; 

 beak moderately incurved, and truncated by a circular foramen, partly surrounded, and 

 slightly separated from the hinge line by a deltidium in two pieces ; beak ridges incurved* 

 so as to approach the hinge margin. Loop elongated, reaching to near the frontal margin 

 before becoming reflected. Shell structure largely punctated. Length 7, width 6, 

 depth 4 lines. 



Obs. The dimensions of Ter. tamarindus do not appear to have ever greatly exceeded 

 seven lines in length. It occurs in the Lower Green Sand of the Isle of Wight ; Kentish 

 Rag, near Sandgate, and in the Upper Green Sand of Farringdon. On the Continent, it 

 is mentioned, as occurring in the Lower Necomien of Auxerre (Yonne), Bettancourt-la- 

 Eerree, at Wassy, Saint-Dizier, &c. It was also discovered by M. De Verneuil, in Spain. 

 The margin is often considerably thickened. It is a rare British Cretaceous Eossil. 



Plate IX, fig. 26. A specimen from the Kentish Rag, near Sandgate. 



