JOURNAL OF CONCHOLOGY. 



315 



LAND AND FRESHWATER SHELLS COLLECTED 



IN THE 



ALLUVIUM OF THE GARONNE, FRANCE, 



By ROBERT SCHARFF, 



Vice-President of the Conchological Society. 



During my stay at Bordeaux this year I had the opportunity 

 of devoting some leisure hours to the study of the land and fresh" 

 water shells of the neighbourhood, belonging to the department 

 of " La Gironde." 



I am specially indebted to Dr. O. Boettger of Frankfort, 

 who is about to write an extensive work on living and fossil Pupce 

 and who kindly drew my attention to the numerous species to be 

 found in the alluvium of the rivers. 



Now there has been a large overflow of the river Garonne 

 this year, and I have been fortunate enough to discover some 

 interesting species among the alluvium. 



It appears that some of the Piipce. have been carried away 

 by the floods for a great distance, P. polydon, ringens and 

 triplicata having only been found in the department of the 

 "Haute Garonne" and the "Pyrenees." 



The following list shows the number of species collected 

 in March and April, 1879, after the subsidence of the inunda- 

 tions : — 



