recently described bxj Messrs. Sovcerbi/. 343 



Northfleet, Kent, see vol. 46, p. 221, 1 species, in npper Chalk. 



Plagioston^a Hoperi, t 380. [(3rd Shale). 



North-Owram, Yorks., \^m NE of Halifax, in Coal-measures 



Anomia ? Min. Con. IV. p. 75. 



Pecten papyraceus, t 354. 



? Min. Con. IV. p. 75. 



Nunney, Somerset, 3 m SW of Frome, in FuUers'-earth Rock. 



Lutraria angustata, t 327. [Sand. 



Parham-Park, Sussex, see vol. 59, p. 331, 1 species, in Green 



Rostellaria Parkinson! 8, t 349, f 5, 3rd in 2d Rank. 

 Paris Environs, in France, (see vol. 35, p. 121, %m\ vol. 59, 

 p. 331) in Cowes Rock*. 



Lymnea longiscata, t 343. iPotamides? plicatus, t 340, f 2. 



Potamides?cinctus, t 340, f l.| ventricosus, t341,fl. 



Ditto see vol, 59, p. 331 and 332, 16 species, in Lon- 



don Strata, coarse Limestone, &c. 



Cancellaria evulsa, t 361, 



f 2 to 4. 

 Cardium porulosum, t346, 



f2. 

 Chama squamosa, t 348. 

 Ditto 



Pleurotoma prisca, t 386. 

 Sigaretus canaliculatus, t 384. 

 Trochus monilifer? t 367. 

 Voluta geminata, t 398, f 1. 



in ujjper Chalk. 



Pecten nitidus, t 394, f 1 . 

 Parma, Italy, 35 m SE of Placenza, hi Clunch Clay? 



Pinna tetragona /3, t 313, f 1. 

 Parton- Passage (or Pyrton) Glouc, 4 ra SSW of Newnham, 

 Spirifer Walcotti, t 377, f 2, 2 lo. [in Blue Lias, 



* Four j'ears and more ago I Jbrnied an opinion, whicli 1 have often 

 since communicated to my Friends, that the anomalous Strata, which in the 

 Environs o( Paris entomb the Bones of supposed land Quadrupeds, and even 

 of Birds of the Air, and which also there, and in the northern parts of the 

 Isle of Wight, and in many other local Sjjots, above the Chalk, entomb the 

 Shells of Fish whose Genera are thought by some, never to have inhabited 

 any thing else than fresh Waters, contra-distinguished from other Marine 

 Genera uniformly inhabiting salt Waters, on which imagined distinctions, 

 it has become fashionable for Geologists to enlarge and speculate : these 

 anomalous Strata, appear to me, not conformably situated upon the subja- 

 cent regular Strata, but everywhere that they appear, they (and the Crag 

 Alarl Strata of the Coast districts of Essex, Suffolk, ami Norfolk, likewise) 

 uiiconformably overlie the edges of the Smithian Scries of Strata. I denote 



these Parisian and Isle of Wight anomalous Strata, by the term Cowes 

 Rocks, because it was, at one of the places of this Name, on the northern 

 ehore of the Isle of Wight, that the late ingenious and excellent Mr. James 

 Sowerby first noticed and began to form a Collection of these alleged 

 fresh-water Shells; this was in February 1808 (see Min. Conch, vol. II. p. !)0) 

 while I was upon my Derbyshire Survey, and while the survey of the En- 

 virons of Paris by Messrs. Cuvier and Urongniart was going on, but before 

 the results of their investigations had become known in this country: see 

 iiiv Remarks on their first announcement of results, Phil. Mag. vol. 35, 

 p." 113. 



Pickwick, 



