610 



MR. C. B. WEDD ON THE 



[Nov. 1898, 



McFarlane and by Mr. Keeping, and have identified the follow- 

 ing:— 



From the Elsworth Eock : — 



Ammonites (Cardioceras) cordatus, 



Sow. 

 A. (C.) vertebralis, Sow. 

 A.(,C.) Marm, d'Orb. 



A. (Peltoceras) Eugenii, Easp. 

 Belemnites Oweni, Pratt. 



B. hastatus (1), Blainr. 

 B. abhreviatus (?j, Mill. 

 Fleurotomaria granulata, Lye. oion 



Sow. 

 Area (Bmula, Phil. 

 Astarte ovata, Smith. 

 Avicula incsquivalvis, Sow. 

 Exogyra nana. Sow. 

 Gryphcea dilatata, Sow. 

 Modiola bipartita. Sow. 

 Myacites (?). 



Ostrea {Alectryoiiia) gregaria, Sow. 

 Opis Phillipsi, Mor. 

 Pecten articulatus, Schloth. 

 P.fibrosus, Sow. 

 P. lens, Sow. 



Pholadomya parcicosta, Ag. 

 Unicardium, depressum, Phil. 

 Rhynchonella varians, Schloth. 

 Waldheimia bucculenta (7j,Sow. 

 Serpula sp. 

 Veronilia sulcata, Sow. 



From the Oxford Clay : — 



Eryma sp. (?) 



Ammonites ( Cardioceras) cordatus. 



Sow, 

 A. {Harpoceras) hecticus, Eein. 

 A. {Peltoceras) athleta (?), Phil. 

 A. {Peltoceras) Eugenii, Easp. 



A. (Perisphinctes) cf. biplex, Sow. 

 Belemnites hastatus, Blainv. 



B. Oweni, Pratt. 

 CucullcBa co7icinna, Phil. 

 Grypkaa dilatata, Sow. 

 Modiola bipartita. Sow. 

 Niicula sp. 



Pecten sp. 

 Pinna mitis, Phil. 



Some of the ammonites in the Oxford Clay here, as usual, are 

 pyritized. This is stated never to be the case in the Ampthill 

 Clay. 



Mr. Keeping also caused an excavation to be made in a ditch near 

 the Engine Mill, nearly | mile south of the Inn. Here again 

 Elsworth Eock was found, the bottom of it being reached at a depth 

 of 6 1 feet from the surface of the field ; below this the excavation 



have examined 

 also, and have 



was continued a little deeper in Oxford Clay. I 

 the fossils obtained from the Elsworth Rock here 

 found them to be : — 



Ostrea (A.) flabelloides, Lam. 

 Diastopora {Bere7iicea) diluviana, 

 Lamx. (on Ammonites Goliathus). 

 Vermilia sulcata. Sow. 



Ammonites {Cardioceras) Goliathus, 



d'Orb. 

 Gryphcea dilatata, Sow. 

 Exogyra nana. Sow. 

 Ostrea {Alectryonia) gregaria. Sow. 



This brings our list of Elsworth E-ock species from Upware to 

 twenty-nine. Of these, all but Ammonites Eugenii^ A. Marice, 

 Belemnites abhreviatus (?), Rhynchonella varians, and Berenicea di- 

 luviana have been found at Elsworth or St. Ives. Ostrea JiaheTlo ides 

 and Vermilia sulcata are in the Woodwardian Museum series of 

 Elsworth fossils, though not recorded by Mr. Roberts. The litho- 

 logical resemblance between this Upware Eock and those of Elsworth 

 and St. Ives is complete, the lower bed at Upware being grey and 

 unaltered as at Elsworth, the upper brownish-yellow and oxidized 

 as at St. Ives. The brown oolitic grains occur also in the clay 

 between the upper and lower Elsworth limestone at Upware, 

 especially near the top and bottom of it, but not in the Oxford 

 Clay below. 



