EXPLANATION OF THE PLATES. 79 
Fig. 4.—MurcuisoniA Lioypit, Sowerby, sp. 
Pleurotomaria, Sil. Syst., p. 619. 
From Sil. Syst., pl. viii., fig. 14. Lower Ludlow; Shelderton, Aymestry. 
Wentock and Luptow.—Sil., 4th ed., p.532. ‘ Abounds inthe Middle 
and Lower Ludlow, and is frequent in Wenlock Limestone ;’’ ibid., p. 231. 
It is recorded as occurring in the Malvern, Woolhope, May Hill, Usk, 
Freshwater, and Marloes Districts. Mem. G.5%., vol.i1., part i., p. 260, 
and in Wenlock rocks, at Craig-hir, and near Llansannan, North Wales. 
M. G. S., vol. iii., pp. 278, 280. In Ireland it has been found at Curra- 
cullenagh and Derrymore Glen, Co. Kerry. Mus. G. S. I. 
HETEROPODA. 
Fic. 5.—a, b, c. BELLEROPHON EXPANSUS, Sowerby. 
B, globatus, Sil. Syst., p. 604. B. expansus, ibid., p. 613. 
a. Original. Dorsal view ; from Upper Ludlow rocks, Kendal. Mus. G. §, I. 
b, c. Young examples; from the Figures in Sil. Syst., pl. ili., fig. 15. 
Upper Ludlow, Felindre. 
LLANDOvery and Luprow.—Sil., 4th ed., p. 533. ‘ Characteristic of the 
Upper Ludlow rock ;” ibid., p. 232. It occurs in the Malvern, Abberley, 
Builth, Llandeilo, and Freshwater Districts. M.G.S8., vol. il., part i., 
and in Upper Llandovery Rocks at Norbury ; and Bogmine, Shropshire. 
M. G. S., vol. ii., pp. 362, 363. 
PTEROPODA. 
Fic. 6.—Turca Forsesit, Sharpe. 
Journ. Geol. Soc., vol. i., p. 314. 
Original, Upper Ludlow, Kendal. Mus. G. S. E. 
Wentock and Luprow.—Sil., 4th ed., p. 534. It is recorded as occurring 
in the Abberley, Woolhope, Usk, Builth, and Llandeilo Districts. 
M. G. S., vol. i., part i., p. 255, and in Wenlock rocks, near Llan- 
sannan. M. G.S., vol. ili., p. 280. 
CEPH ALOPODA. 
Fig. 7.—LIitvitEs ? GIGANTEUS, Sowerby. 
Sil. Syst., p. 622. 
Reduced to halfnatural size. From Sil. Syst., pl. xi., fig. 4. Lower Ludlow, 
Mocktree Hays. 
WENLockK and Luptow.—Sil., 4th ed., p. 535. ‘“ Qne of the finest fossils 
from Leintwardine and Malvern ;” ibid., p. 233. It occurs also in the 
Malvern, Abberley, Usk, and Llandeilo Districts. M.G.S., vol. iii., 
part i., p. 150. 
