JOURNAL OF CONCHOLOGY. l6l 



SUBFOSSIL SHELL DEPOSITS IN NOTTINGHAM- 

 SHIRE. 

 By C. T. MUSSON. 



[Amongst various interesting memoranda on Nottingham- 

 shire conchology which Mr. Musson has sent for use in the prepa- 

 ration of the new monograph are some which are worthy of 

 immediate publication. We now give the notes on the subfossil 

 deposits of Bingham, Gotham, and Scarthingmoor ; and 

 Mr. Musson having sent no specimens of the deposits and their 

 included species, we mark by means of an asterisk such of the 

 latter as we have ourselves seen. — Ed.] 



On Bingham Moor the moles have turned up numerous 

 heaps of a black soil containing great quantities of shells, 

 principally land species. On sifting some, I found the following 

 forms : — 

 *Bythinia tentaculata Helix concinna 



*Planorbis spirorbis *H. hispida 



*P. vortex H. rotundata 



*P. complanatus *H. pulchella 



*Limnaea peregra var. ovata Pupa umbilicata 



L. stagnalis *P. marginata 



*L. truncatula * Vertigo antivertigo 



*Succinea putris *V. pygmasa 



*S. elegans V. edentula 



*Zonites nitidulus *Ciausilia rugosa 



Z. crystallinus *Cochlicopa lubrica 



*Helix nemoralis (vars. *Carychium minimum 



libellula 00300 and 00000) 



This earth appears to be about three to four feet thick, 



and rests upon Keuper clay. It occupies a hollow in the hills 



N. and N.W. of Bingham, covering a considerable space. I 



traced the shells for a distance of about four hundred yards to 



the edge of the deposit, which is — roughly speaking — about 



half a mile broad by about a mile and a half long, and I believe 



