1847.] 



PRESTWICH ON THE LONDON CLAY. 



401 



Lists of the Testacea of the London Clay proper, of the Brackie- 

 sham Bay Sands, and of the Barton Clays ; to ivhich are added, 

 the principal Foraminifera and An?ielidesf. 



Species. 



Synonyms. 



Acteon crenatus, Sow 



simulatus, Soto 



Amphidesma splendens, Soia. 

 Ampullaria acuta, Sow 



ambulacrum, Sow 



depressa. Sow 



patula, Sow 



ponderosa, Besh 



sigaretina, Soiv 



Willemetii, JDesh 



scalariformis. Desk. ,.... 

 Ancillaria subulata, Sow 



olivula?. Lam 



Anomia lineata, Lam 



Area appendiculata, Lam. . . 



barbatula, Lam 



Branderi, Sow 



impolita. Sow 



interrupta, Lam 



nitens, Sow 



Astarte rugata, Soiv 



donacina, Soiv 



Avicula media, Soiv 



arcuata, Sow 



papyracea, Sow 



Axinus angulatus, Soiv 



Balanus erisma, Soiv 



Beloptera anomala, aS'ow 



belemnitoidea, Bl 



Bifrontia lauduneusis, Besh... 

 Buecinura junceum, Sow 



stromboides, Lam 



BuUaea striata ?, Besh 



Bulla acuminata, Sow 



constricta, Soio 



elliptica, Besh 



attenuata, Besh 



lignaria, Besh 



Toruatella, Lam. 



Sow. as Tellina .. 

 Globulus, /. Sow. 



Natica, Lam. 

 , Besh. 



A. buccinoides. Lam. 



? B. ovulata. Lam 



Not the recent B. lign. 



t In this list I have confined myself to described species only. I believe that many of these 

 will be described in Mr. Dixon's forthcoming work. In Mr. Edwards's collection alone there are 

 probably from 150 to 200 undescribed species from Brackiesham and Barton. In Mr.Wetherell's 

 collection from Hampstead and Highgate the nmnber of midescribed species is also very large, 

 and it is the same with Mx. Bowerbank's collection from Slieppey. I am indebted to Mr. Ed- 

 wards for many corrections aiid additions to this list. To Mr. Dlorris I have to express many 

 obligations for his kind and valuable co-operation in assisting me to draw up the lists of the 

 several local groups of fossils, and for many important suggestions. 



t Lists of the fossils from Brackiesham Bay and Bognor were given by Dr. Mantell in his 

 ' Geology of the South-East of England,' A more recent list was presented by ]\Ir. Edwards to 

 the British Association at the Southampton meeting. I myself have not had an opportunity of 

 visiting either Brackiesham or Bognor. The lists of fossils of these and the other str.ata I have 

 compiled chiefly from Sowerby's ' Mineral Conchology,' BI orris's ' Catalogue of British FossUs,' 

 and, from the above, only the principal synonyms are given. 



