16 BRITISH TERTIARY BRACHIOPODA. 



Obs. We are only acquainted with one species of British recent Terebratula, and two 

 from the supercretaceous period. 1 



7. Terebratula grandis, Blumenbach. Plate I, fig. 18, Plate II, figs. 1 — 8. 



Terebratulites grandis, Blumenbach. 1803. Specimen Archaeologise Telluris Ter- 



rararumque Imprimis Hannoveranarum, Tab. 1, fig. 4 ; 

 figured, but not named, likewise by Knorr, in 1/55. 

 Lapides Deluvii Universalis Testes, Tab. b iv, figs. 1 and 2; 

 reproduced by Walsb and Knorr in 1768. Die Natur- 

 gescbichte der Verst, Tab. b iv, figs. 1, 2; also Ency. 

 Meth., pi. 239, fig. 2. 



Terebratulites giganteus, Schl. 1813. Beitriige Zur Natur. der vers in Leonhard's 



Mineral Tasch., vol. vii. 

 — — Schl. 1820. Die Petrefactenkunde, p. 2/8, No. 48. 



Terebratula variabilis, Sow. M. C, vol. vi, p. 148, Tab. d lxxvi, figs. 2 — 5, 1829. 



— gigantea, V. Buch. 1838. Mem. de la Soc. Geol. de France, vol. iii, 



1 ser., p. 222, (non pi. xx, fig. 3, which is Ter. bisinuata, 

 Lamarck.) 



— variabilis, Galeotti. 1837. Memoir sur la Const. Geol. du Brabant, 



p. 151. 



— — Nyst and Westendorp, 1839. Nouv. Rech. sur lesCoquilles 



Fossil de la Province d'Anvers, p. 15, No. 37. 



— MAXIMA, Charlesworth. 1837, Mag. Nat. Hist., p. 92, figs. 13, 14. 

 Sowerbii, Nyst. 1843. Coq. et Polyp, de la Belgique, p. 335, pi. xxvii, 



fig. 3 a, b. 



— variabilis, Morris. 1843. Catalogue. 



— — Tennant. A Stratigraphical List of Brit. Fos., p. 17, 1847. 



— grandis, Bronn. 1848. Index Palseontologie, p. 1237. 



— variabilis, Brown. 1838. Illust. of Foss. Conch, of Great Britain, pi. liv, 



figs. 16, 19, 21, 22. 

 Waldheimia variabilis, King. 1850. A Monograph of Permian Fossils, p. 60. 



Diagnosis. Shell inequivalved, variable in form, oval, more or less orbicular, generally 

 longer than wide ; valves almost equally convex ; beak produced, not much recurved, and 

 obliquely truncated by a large circular foramen, separated from the umbo by a narrow, 

 cicatrised, concave deltideum, disunited in the young age ; beak ridges indistinct ; smaller 

 valve regularly convex, two undefined, slightly elevated plaits existing towards the frontal 



1 The discovery of this species, Terebratula cranium, as a British Shell, is due to Dr. Fleming, who 

 obtained three specimens in deep water to the Eastward of Bressay, in Zetland. It is found also on the 

 Coast of Norway and in the Northern Seas. It has been well described and figured by Professor Forbes, 

 G. B. Sowerby, and by Colonel Montague, in the eleventh volume of the ' Linnean Transactions,' &c. It 

 has not been noticed in the fossil state ; and, as stated by Sowerby, is well distinguished from Ter. vitrea 

 by the greater length of its loop. Plate I, figs. 8, 8° *. 



