﻿SUPPLEMENT, PLATE X. 



Fig. 



1 — 6. Discina refiexa, Sow. 1 — 2 a. Types. Inferior-oolite Sands, the Peak, Yorkshire. 3. Attached 



to Leda ovum, Grantham, Lincolnshire. Museum of School of Mines. 4. 

 Alum-shale, Upper Lias, Skelton Park Pits, Yorkshire. Mr. R. Tate's Coll. 

 5. One of the original examples of Patella /avis (Sow., ' M. C.,' tab. 139, 

 fig. 4), Alum-shale, Whitby. British Museum. 6. Interior of smaller 

 valve, attached to an Ammonites cornucopia, Upper Lias, south of Whitby, 

 Yorkshire. Mr. Blake's Coll. (P. 82.) 



7, 8. „ Holdeni (?), Tate. 8. An enlarged figure of the interior of the smaller valve from Am. 



Bucklandi zone, Lower Lias. Newbold (Rugby School). (P. 85.) 



9, 10. „ orbicularis, Moore. 9 a, b. Enlarged. From the Fish-bed and Clays of the Upper 



Lias, Ilminster. Mr. C. Moore's Coll. (P. 83.) 



11. „ Davidsoni, Moore. 11 a. Enlarged. Perhaps a young form of Discina Holdeni. 



Lower Lias, Bedminster, Devon. Mr. Moore's Coll. (P. 84.) 



12. ,, Holdeni, R.Tate. 12 a. Enlarged. Attached to a specimen of Astarte Gueuxii. From 



the Lower Lias of the Island Magee, County Antrim. (P. 85.) 



13. „ Dundriensis, Moore. 13 a. Enlarged. Inferior Ooolite, Dundry. Mr. C. Moore's 



Coll. (P. 84.) 



14. „ Moorei, Dav. 14 a. Enlarged. Upper Lias, Ilminster. Mr. C. Moore's Coll. (P. 85.) 



15. „ annulosa, Dav. Cornbrash, Scarborough. Mr. Leckenby's Collection, and the Wood- 



wardian Museum, Cambridge. (P. 87.) 



16 — 19. „ latissima, Sow. 16. Specimens with shell preserved (which is a rare condition). From 



the Kimmeridge Clay, Sub-wealden boring, Netherfield, near Battle, Sussex, 

 from a depth of 633 feet. 17 and 18 are after the original specimens (' Min. 

 Con.,' tab. 139, figs. 1 and 5), British Museum. 19. Another of Sowerby's 

 specimens, from Pakefield, in Suffolk. In the same erratic blocks, with the 

 Discina, were found specimens of Lingula ovalis. (P. 80.) 



20. „ Etheridgei, Dav. Internal cast of upper valve. 20 b. Enlarged. Inferior-oolite 



Sands, Nailsworth. Museum of School of Mines. (P. 86.) 



21 — 24 „ (Orbiculoidea) Babeana, D'Orb. (= D. Townshendi, Forbes), Ehsetic Beds. 21, 23, 



and 24, are from Vallis, Frome. 22. From Beer-Crowcombe. Mr. Moore's 

 Coll. (P. 87.) 



25. Lingula succulus, Chapuis and Dewalque. A fine specimen, from the Middle Lias (Marlstone), 



Limpley-Stoke, near Bath. Mr. Moore's Coll. (P. 79.) 



26. ,, ,, Small example. Inf. Ooolite, Lansdown, Bath. Mr. Moore's Coll. (P. 79.) 

 27 — 29. Leptcena Davidsoni, Desl. 27. Upper Lias, Ilminster. Mr. Moore's Coll. 28, 29. From the 



Upper Lias of May, near Caen, France. 29. Hinge-area and deltidium 

 enlarged. (P. 91.) 



30 „ rostrata, Desl. Middle Lias, Whatley. Mr. Moore's Coll. 30 a, b. Enlarged. (P. 92.) 



31, 32. Spiriferina oxyptera, Buv. 31. From the Middle Lias, Huntcliff, Yorkshire. Mr. R. Tate's 



Coll. 32. Middle Lias, Bay of Caisaig, Isle of Mull, Scotland. (P. 99.) 



