1 1 8 Quarterly Journal of Conchology. 



96. C. cornea var. nucleus Studer. — Ladenburg. 



97. C. solida. — The Rhine, rare. 



98. C. calyculata Drap. — Various ponds. 



99. Unio pictorum L. — Neckar. 

 100. U.tunnidus Fhil. — Neckar. 

 loi. U. batavus. — Neckar. 



to2. U. margaritiferus L. — Schonau. 



103. Anodonta cygnaea L. — Neckar. 



104. A. anatina L. — Neckar. 



105. Dreissena polymorpha Pallas. — ^Neckar and Rhine. 



In making out the foregoing list, I fear many will object that 

 it is not drawn out on any of the approved scientific works, but the 

 fact is I took them as I came across my notes, and as the speci- 

 mens lay in my cabinet. So far as it goes, I can vouch for the 

 correctness, having found specimens of all myself, except Testacella 

 and Cyclas solida. This last is identical with samples sent me 

 " inter alia " from the River Don, Canada. This is as interesting 

 a fact as the Helix persoiiaia and H. claiisa, Say, showing the links 

 which must at one time have joined these now widely separated 

 continents. In the geological formation, locally called Loess, and 

 on what is now nearly on a level with the bed of the Neckar, are 

 to be found examples of Helix hispida, called by Palseontologists 

 H. plebeia and Zua lubrica, the latter occasionally as bright and 

 dark-coloured as recent living shells, and over these again in 

 another stratum is U/iio batavus ; and I have seen in the Solen- 

 hofen stone Dreissetia polymorpha embedded. In conclusion, I 

 think it probable that Helix bidens and H. naticoides may be found, 

 the one being at Dresden and the other in Switzerland. 



DESCRIPTIONS OF SOME NEW SPECIES OF LAND 

 AND FRESHWATER SHELLS, AND REMARKS 

 ON OTHER SPECIES FOUND IN JAPAN. 



By EDGAR A. SMITH, F.Z.S. 



Zoological Department, British Museum. 



During the past year a small collection of terrestrial and fresh- 

 water shells was kindly presented to the British Museum by 

 C. W. Goodwin, Esq., by whom they were collected chiefly in the 



