1866.] 



SEELET DEIFT OF THE FENLAND. 



477 



List of Land and Freshwater Shells from Barnwell. 



Sphaerium corneum, Lin. 



Pisidium amnicum, Mull. 



fontinale, Drap. The typical 



form occurs together with var. Hen- 

 slowana. 



Unio pictorum, Lin. 



rhomboideus, Sckrot. Many spe- 

 cimens still retain the ligament. 

 One occurred of almost circular 

 form (L. 1"5 inch; B. 1*9 inch). 



Cyrena fluminalis. 



Hydrobia marginata, Mich. 



Bithynia tentaculata, Lin. 



Valvata piscinalis, Miill. 



cristata, Milll. 



Planorbis nitidus, Midi. 



■ glaber, Jeff. 



spirorbis, Milll. 



■ vortex, Lin. 



complanatus, Lin. 



contortus, Lin. 



Limngea peregra, Miill. 



auricularia, Lin. 



palustris, Miill. 



truncatula, MUll. 



Ancylus fluviatilis, Miill. 



Succinea putris, Lin. Some of the 

 forms approach S. elegans, Risso. 



Zonites cellarius, Miill. 



Zonites nitidulus, Vrap. 



nitidus, Midi. 



fulyus, Mull. 



Helix nemoralis, Lin. 



arbustorum, Lin. Both the typical 



form and the var. alpestris, as well as 

 intermediate varieties may be easily 

 found. 



hispida, Lin. Very common. I 



found one specimen with reversed 

 spire. 



ericetorum, Midi. 



rotundata, Milll. 



pygmsea, Drap. Common. One 



occurred with reversed spire. 



Bulimus montanus, Drap. 



Pupa marginata, Drap. 



Vertigo antivertigo, Drap. 



pygmaea, Drap. 



Moulinsiana, Dupuy. (Mr. J. Gr. 



Jeffreys has kindly verified this de- 

 termination, and says that it " cor- 

 responds in size with continental spe- 

 cimens.") 



Clausilia rugosa, Drap. 



biplicata, Mont. 



Cochlicopa tridens, Bulteney. 



lubrica, Miill. 



Carychium minimum, Miill. 



We here find, as in other contemporary deposits, Cyrena flumi- 

 nalis, HydroJ)ia marginata, and Unio rhomboideus, which have now 

 become extinct in England. Vertigo Moulinsiana has been once 

 met with by Mr. Jeffreys in Ireland, but has not hitherto occurred 

 in England. 



The shells are mostly in a very good state of preservation. The 

 Helices retain their bands of colours, and the bivalves are generally 

 found with united valves. 



March 15, 1866. Edw. S. Dewick. 



The evidence of the existence of man consists of a cut bone. The 

 specimen is a second rib, like that of an elephant, and was ob- 

 tained by the Rev. E. J. Blake, M.A., of Caius College, in the spring 

 of 1862. The greater part of the bone is wanting, having been 

 severed at about three inches from the articular end, which part 

 only is preserved. This fossil shows on the severed end numerous 

 cut surfaces, evidently made with some sharp instrument used by a 

 powerful hand. The facets extend aU round the end ; and it is not 

 impossible that they were made to facilitate the breaking of the bone, 

 much as one would notch a broomstick before putting it across the 

 knee. The specimen is beautifully preserved, and does not show a 

 trace of attrition or gnawing, nor are there on it any other cuts. It 

 is in the usual condition of Barnwell gravel-fossils, of a pale rusty- 

 yellow colour, slightly glossy, and has lost most of its animal matter. 



