144 PEOCEEDINGS OP THE GEOLOGICAL SOCIETY. [Jan. 24, 



are numerous smaller specimens, all of which attain the same 

 size, and are more oblique. They may be distinct. 



Lima punctata (Sow.), M. C. pi. 113. fig. 12. I. 



Lima succincta (Schl.), Taschenb. 1813, p. 72, =ITermanni (Yoltz.), 

 Goldf. pi. 100. fig. 5. I. 



Lima pectinoides (Sow.), M. C. pi. 114. fig. A,=L. acuticosta, in Tate, 

 Geol. Journ. 1867, p. 312. Common in pit I. There are some 

 specimens more oblique, with curved hinge-line, and having no 

 sign of any intermediate ribs at all. They are of small size, 

 and may he the young of the above, though there are others as 

 small not showing these characters. If they prove distinct, 

 they should be called L. pura. 



Lima falla.v? (Chap. & Dew), Terr. Sec. de Lux. pi. 27. fig. 4. I., 

 II. Small specimens, mostly casts, 



Pecten punctatissimus (Qu.), Der Jura, pi. 9. fig. 14. I. Common. 



Pecten textilis (Mstr.), Gldf. pi. 89. fig. 3. I. 



Pecten cequaUs (Qu.), I. c. pi. 9. fig. 13. I. 5. 



Pecten pollux (D'Orb.), Prodrome, p. 220. Oyster -bands. 



Ostrea irregularis (Mstr.), Gldf. pi. 79. fig. 5, = 0. stiblameXlosa 

 (Dkr.), and 0. Uassica (Strickl.). There are specimens exactly 

 corresponding to all these, which, however, T regard as one 

 species. They are common in all the beds, and are the oysters 

 which form the '• oyster-bands." Two varieties may be marked : 

 — var. ungula (Mstr.) ; and var. concava, like var. ungula, but 

 the attached valve very concave, and only attached at the umbo. 



Ostrea arcuata (Lamk.), An. S. Vert. p. 398,= GrypJicea incurva 

 (Sow.), M. C. pi. 112. figs. 1, 2. YI. Not found in situ, possibly 

 from the surface. 



Waldheimia perforata (Piette), Bull. Sec. Geol. de France, t. 13. 

 pi. 10. fig. \,= Terehratida psilonoti (Qu.). I., II. 



Serpula capitata (Ph.), Geol. of Yorks. pi. 14. fig. 16. I. 



Serpula plicatilis (Mstr.), Goldf. pi. 68. fig. 2. I. 



Berpula socialis {(joIM.), pi. 69. fig. 12,= Galeolari a Jlliformis (Terq. 

 & Piette). I., II. 



Cidaris Edwardsii (Wr.), Brit. Poss. Ech. pi. 1. fig. 1. Represented 

 by a plate and numerous spines. I. 



Hem,ipedina Tomesii (Wr.), I. c. p. 457. I. 5. A test and numerous 

 spines, also teeth probably belonging to this. Spines of another 

 species ; longitudinal ribs toothed. I. 



Pentacrinus psilonoti (Qu.), I. c. |)1. 5. fig. 7. Common in all the 

 upper beds. 



Septastra;a excavata (From.), Martin, Z. c. pi. 8. figs. 1-5. I. A 

 magnificent specimen, 10 in. by 7 in. by 4 in. 



Montlivaltia Haimei (Chap. & Dew.), I. e. pi. 38. fig. 5. II., YI. 



POEAMINIFEKA. 



It is unadvisable here to attempt a fuU description of these, as 

 they are exceedingly numerous, and, when fully studied, likely to 



