58 BRITISH CRETACEOUS BRACHIOPODA. 



Plate VI, fig. 7. Interior of the dorsal or socket valve with its loop, from the same 



collection and locality; figures 10 to 28, and 31, are all from Mr. 



Carter's Collection, and neighbourhood of Cambridge. 

 „ figs. 8, 9. Another Upper Green Sand specimen from Cambridge. 



„ figs. 10 to 13. Different examples and ages of the variety {Ter. obtusa, Sow.) 



from Upper Green Sand, of Cambridge. 

 „ figs. 14 to 28. Other examples of different shapes and ages from the same 



bed and localitv. 

 „ figs. 29, 30. Ter. biplicata from the Gault of Folkstone. 



„ fig. 31. A specimen from the lower chalk near Cambridge. 



„ fig. 32. Another from the Lower Chalk of Lewes, in the Cabinet of Mr.Catt. 



„ fig. 33. An elongated example from Warminster, in the Museum of Prac- 



tical Geology. 

 „ figs. 34 to 42. Ter. biplicata, a short inflated variety from near Warminster, 



in the Collection of Mr. Cunnington. 

 figs. 43, 44. id. {Ter. f aba,) Sow. 



,, figs. 45 to 49. Ter. biplicata? stated to have been found in Lower Green 



Sand, near Devizes, by Mr. Cunnington. 

 Plate IX, fig. 37. A specimen from the Upper Green Sand of Farringdon, in the 



Collection of Mr. Sharpe. 

 „ fig. 40. A specimen of Ter. biplicata ? from the highest bed of the Lower 



Green Sand series in the vicinity of Folkstone, Collection of Mr. 



Mackie. 



23. Terebratula prcelonga, Sowerby. Plate VII, figs. 1, 2. 



Terebratula prcelonga., Sovwrby {in Fitton.) Trans, of the Geol. Soc.vol. iv, p. 338, 



pi. xiv, fig. 14, 1836. 



— biplicata, var. acuta, V. Buck. Class, des Terebratules, M£m. Soc. 



Gteol. de France, vol. iii, p. 220, 1834. (Not T. biplicata, 

 Brocchi, nor Sow.) 



— prcelonga, Brown. Illust. of Fossil Conch., pi. liv, figs. 8, 10, 1838. 



— biplicata, Lexjmerie. Mem. Soc. Geol. de France, vol. \, p. 29, (not 



Brocchi,) 1842. 



— Prcelonga, Morris. Catalogue, 1843. 



— — Forbes. Quart. Journ. Geol. Soc, vol. i, p. 345, 1845. 



— — D'Orbigny. Pal. Franc., Terrains Cretaces, vol. iv, p. 75, pi. 



506, figs. 1—7, 1847, and Prpdrome, vol. ii, p. 85, 1850. 



— — Catalogue of the Terebratulce in the British Museum, p. 28, 



1853. 



Diagnosis. Shell of an elongated oval shape, with almost equally convex valves ; beak 

 prominent, not much incurved, obliquely truncated by a large circular foramen, partly 



