TEREBRATULA. 33 



middle Lias, associated with Ter. quadrifida, cornuta, Moorei, &c, at South Petherton, near 

 llminster ; at Deddington it was found by Mr. Faulkner, and is stated to occur in Yorkshire 

 by Professor Phillips. In France it is abundantly found at Evrecy, Landes, Fontaine- 

 etoupe-four, &c, near Caen, and I believe also in Germany, though none of the numerous 

 specimens I have seen from that country agree exactly with Sowerby's type. Figs. 1 and 2 

 are from the collection of Mr. Moore. 



26. Terebratula Moorei, JDav. PL IV. Figs. 6, 7. 



Terebratula Moorei, Dav. Bull. Soc. Geol. de France, 2 de Serie, t. vii., pi. 1, 

 figs. 21—23. 



Diagnosis. — Shell ovate, elongated, slightly notched in front ; valves convex of a nearly 

 equal depth, smooth, finely punctuated, with strong lines of growth. The imperforated 

 valve presenting a slight longitudinal depression visible at the umbo, soon lost from the 

 convexity of the valves, but reappearing towards the front. Rostral valve convex with 

 small recurved beak, compressed laterally and keeled, with diminutive foramen ; a slightly 

 longitudinal depression is visible towards the front. The margin is straight, almost all 

 round. Loop simply attached to the Crura and extending to near the frontal margin. 

 Length 18, breadth 14, depth 11 lines. 



05s. When treating of Ter. resupinata we endeavoured to point out the affinities and 

 distinctive characters between the two forms. This species is found in the marlstone of 

 South Petherton, along with T. resupinata. It also occurs in beds of the same age in 

 Normandy. Fig. 6 is from the collection of Mr. Tennant. 



27. Terebratula impressa, V. Buck. PI. IV, figs. 8—10. PI. X, figs. 7, la 5 c. 



Terabratula impressa, De Buck. Zieten Wiirtemb. Verst., p. 53, pi. xxxix, fig. 11, 



1832. 



— — Bronn. 1837. Leth. Geog., p. 306, pi. xviii, fig. 12. 



— — V. Buck. Mem. Soc. Geol. de France, l ere Serie, p. 226, 



pi. xx, fig. 7, 1838. 



— — Quenstedt. Das Flozgebirge Wurtembergs, 1843. 



— — Bronn. Index Palseont., 1849, p. 1238. 

 _ _ D'Orb. Prodrome, vol. i, p. 288, 1849. 



Diagnosis. Shell inequivalved, more or less rounded, length and width nearly the 

 same ; rostral valve convex with rounded recurved beak, foramen entire, deltidium in two 

 pieces obtusely triangular : lateral ridge of the beak continued along the side without re- 

 curving to join the hinge margin. Imperforated valve, slightly convex at the umbo ; but 

 soon becoming gently and equally depressed ; the marginal line of both valves forming a 

 regular depressed curve soon after leaving the hinge line. Loop simply attached to Crura 



