OP CONCHOLOGY. 179 



tersa, Bens., and E. milium, Bens. By Wii. T. 

 Blanford. 



Oji the Species of Veneridce found in Japan. By Arthur 

 Adams. 



Bosinia gihha, A. Ad. 



I do not believe that Gemma gemma, Totten, is found in Ja- 

 pan. _ Mr. Adams has probably mistaken an undescribed allied 

 species for it. 



Nudihranchs in Fresh Water. By J. E. Gray. 



_ Mr. Kent described, at the last meeting of the Zoological So- 

 ciety, a new Nudihranch under the name of Emhletonia Grayii, 

 discovered in the Victoria Docks at Rotherhithe. When I men- 

 tioned the circumstance to Dr. Mobius, at Kiel, he observed : 



"It was very interesting to me to find that a mollusk of the 

 family ^olididai had been discovered in brackish water near 

 London Bridge. In the Baltic Sea, Bmbletonia jmllida extends 

 as far as East Prussia, near Konigsberg. where the water has 

 only 7 of salt in 1000. In like manner, Protolimax capitatus 

 {= LimajmUia nigra) endures almost fresh water at Bornholm 

 and Gothland, in the Baltic." 



Mr. Kent informs me that Emhletonia Grayii is nearly allied 

 to E. pallida, and it has been found in company with BapJinia, 

 Floscidaria, and many other fresh water Entomostraca and 

 Rotifera. 



No. 16. April, 1869. 



Lamarck's Collection of Shells {Notice of). By Dr. J. 

 E. Gray. 



No. 17. May, 1869. 



Notes on some Indian and Mascarene Land-Shells. Bv 

 Wm T. Blanford. 



1 . On the Lingual Ribbon of Realia ( Omphalotropis). 



2. On Cyclotopsis. 



3. On the Getius Cremnoconchus (olim Cremnobates). 



4. On the AlycmnCe and Biplommatininoe. 



Notes on some recent Mediterranean species of Brachio- 

 poda. By Thomas Davidson. 



In this paper Risso's species are determined from the exami- 

 nation of the types in his collection. Prof. 0. G. Costa's genus 

 Platidia has three months priority over Morrisia, Davidson. 



Are Unios Sensitive to Light ? By C. A. White. (From 

 Silliman's Journal.) 



