TEREBRATULA. 51 



must be considered exceptional. It has likewise been lately discovered by Messrs. Moore 

 and Morris in the Chalk with green grains or Chloritic Marl, of Chard, Chaldon, and 

 Evershot ; also in the Gray Chalk between Dover and Folkstone by Messrs. Mackey, 

 Morris, and myself. Its vertical range is, therefore, from the Upper Green Sand to the 

 Gray Chalk. I regret not having been able to examine the interior of this species, and 

 suspect its organisation will prove to be distinct from that of true Terebratula, where 

 however we must leave it for the present. T. squamosa is very common in the Crate 

 Chloritee of Rouen, where it has been collected by M. D'Orbigny and myself. 



Plate V, fig. 5. The original specimen on which Dr. Man tell founded his species from 

 the Chalk Marl of Hornsey, in the collection of the British Museum. 

 fig. 6. 6 ttb . A specimen, natural size, from the Gray Chalk between Eolkstone 

 and Dover, in the collection of Mr. Morris. 

 ,, 6 d . The same, enlarged. 



„ 6 C . A fragment of the same, likewise considerably magnified. 



„ fig. 5a. Another specimen, from the same locality, in the collection of 



Mr. Mackey. 

 „ figs. 7, 8, 9, 10. Specimens, natural size, from the Upper Green Sand of 



Pottern Butts, in the collection of Mr. Cunnington. 

 „ fig. 11. A specimen from the Chloritic Marl of Chard, in the collection of 



Mr. Moore. 

 „ fig. \\ abci . Enlarged illustrations of the same. 



20. Terebratula oblonga, Sow. Plate II, figs. 29 — 32. 



Terebratula oblonga, Sowerby. Min. Conch., vol. vi, p. 68, tab. 535, figs. 4, 5, 6, 



1829. 



— oblonga, V. Buck. Uber Ter., 1834, and Mem. Soc. Geol. de France, 



vol. iii, p. 359, pi. xvi, fig. 2, 1838. 



— — Reenter. Kreid., p. 39, No. 18, 1840. 



— quadrata, Fitlon. Trans. Geol. Soc, vol. iv, pi. xiv, fig. 9, 1836. 



— oblonga, Morris. Catalogue, 1843. 



— — Forbes. Quart. Journal of the Geol. Soc, vol. i, p. 346, 



No. 106, (nou 105, as erroneously stated by M. D'Orbigny,) 



1845. 

 Terebratella — D'Orb, Pal. Francaise Ter. CretacSes, vol. iv, p. 113, pi. 515, 



figs. 7—19, 1847. 

 Terebratula — Cunnington. Quart. Journal of the Geol. Soc, vol. vi, 



p. 454, 1850. 

 Terebratella — D'Orb. Prodrome, vol. ii, p. 85, 1850. 



Diagnosis. Shell oval, oblong, gibbous ; beak nearly straight, rather produced ; fora- 

 men entire, formed out of a portion of the truncated beak and the two deltidial plates 



