334 JOURNAL OF CONCHOI.OGY, VOL. 10, NO. II, JULY, I903. 



Bythinia tentaculata (L.). 2 — Kew, MitGharri, CoUierswood, 

 River Mole. 



B. leachii (Shepp.). 2 — CoUierswood, Kew, Richmond, River 

 Mole, Leatherhead. 



Valvata piscinalis (Miill.). 2 — Richmond Park, CoUierswood. 



V. cristata Miill. 2 — -Richmond Park, CoUierswood, Leather- 

 head. 



Unio tumidus Phil. 2 — River Thames, Putney and Kew. 



U. pictorum P. 2 — River Thames, Putney and Kew; 9 — River 

 Mole, Micklehani. 



Sphserium corneum (L). 2— Mitcham, Kew, CoUierswood. 



S. rivicola (Leach). 2 — River Thames, Kew. 



S. pallidum Gray. 2 — Kew ; 9 — Gatton. 



Pisidium amnicum (Miill). 9 — Riddlesdown. 



Foreign Distribution of Helix virgata, H. caperata, and other British 

 Mollusks. — Having spent some time during the last two summers in places where 

 conchologisls cannot be said to jostle each other, some of my records may he inter- 

 esting. Last year, in Sicily, I spent some days roaming aljout the ruined Greek 

 temples at (lirgenti, and though I found Helix asftetsa and H. pisana in aliundance, 

 as well as a shell indistinguishable from H. acuta, I found no trace of //. virgata or 

 //. caperata. //. aspersa, H. vtrmiciilata, and H. aperta are commonly sold in 

 Ciirgenti as food. I also had a fortnight's wandering over the desolat« shore of 

 Karkinit Bay in the Krimea towards F'erikop, and here the only two land shells 

 were H. virgata and H. caperata. This year I sought for them along the Russian 

 coast at Ghenitshesk in the Azov, but found neither them nor any other terrestrial 

 mollusk whatever. Jeffreys says : — "The foreign distribution oi H. virgata appears 

 to be confined to France, Portugal, Italy, Greece, and the sea-board of North 

 Africa." Having met with it in the Krimea, we may expect it in Asia Minor and 

 Palestine, as this summer I found it among the old forts of Alexandria, and a large 

 form of it may always be found in the market at Algiers. Mr. E. A. Smith informs 

 me that Pfeiffer (" Monographia Heliceorum," vol. I, p. 204, <ind vol. 5, p. 204), 

 quotes Spain, and later gives the Canary Islands. H. caperata has a wider conti- 

 nental distribution, as far east as Palestine, and twenty years ago I found it further 

 east at Bagdad. The only marine mollusk that I could find in the brackish water 

 of the Azov was a small Cardiiiiii, 075 inch in diameter, akin to our Caniittin edith: 

 Along the western shore it was so abundant, that most of the sand is composed of it. 

 I could not, however, secure a living or even a perfect specimeii. This same cockle 

 is ubiqiiitous in the Black Sea and also came up in anchor mud in the Bosphorus. 

 — Lionel E. Ada^ls {Read before the Society, April 8. 1903). 



