68 JOURNAL OF CONCHOLOGY, VOL. l6, NO. 2, AUGUST 30, I919. 



Rare Shells in Shell-Pockets on the Wirral Sand-Dunes.— Whilst stay- 

 ing at Hoylake, Cheshire, in August last, I came across some excellent "shell- 

 pockets " on the sand-dunes. The best examples occurred near Meols, and these 

 yielded the most interesting species of mollusca. The following is a list of shells 

 obtained: — Helix aspersa (few; very young), II. neinoralis (few; very young), 

 H. barbara (few tips), H. caperata (common, large), H. hispida (common), Vitrina 

 pelhicida (3), Vallonia excentrica (common), V. costata (common), Coclilicopa lub- 

 rica (common, large and small), Clatisilia bidentaia (i), Piipilla vmscorum 

 (common ; variable in size ; many without denticle), Carychmm viiiiitHitm (2), 

 Vertigo pygnuva (20), V. antivertigo (17), V. pusilla (i), V. anqustior (i), V. 

 ininutissima (l), Succinea elegans (common), Limutsa pereger (few ; small), L. 

 tnmcatula (many of a very small form), L. palustris (few ; young.), Planorbis 

 kucostoma {1), PL livvis {=glaber) (i), and Peringia { — Hydrobid) ulvce (few). 

 In "pockets" on dunes between Hilbre Point and West Kirby the most noteworthy 

 species found were Latiria cylindracea (rare), Vertigo antivertigo (2), and Peringia 

 { = Hydrobid) tdvir (abundant). The latter are of the typical form, such as is 

 found on the adjacent Dee marshes — close to the type locality: " shores of Flint- 

 shire." On the Hoylake shore a much larger form occurs in addition. In 

 " pockets" on dunes in a third locality, near Leasowe Castle, the following were 

 found, in addition to many of the more common species : Limmva truncatula (few 

 o{v&\^ %vi\2i}i\ioxxa),?i^A Phytia myosotis {=denticitlatd) (i specimen). Several of 

 the forms mentioned above are new to the Cheshire list, but it is doubtful whether 

 these can now be found in a living state in the neighbourhood owing to the changes 

 which have gone on. This applies more especially to the Vertigos and other 

 moisture-loving species. The majority of the "shell-pocket" forms are very old 

 and sand-worn shells, and have in all probability been blown up from the eroded 

 patches of former land-surfaces at the base of the sand-dunes. These land-surfaces 

 are known to have yielded numerous land and freshwater species in the past, but 

 are now almost inaccessible for detailed study. — J. Wilfrid Jackson (Read 

 before the Society, September nth, 1918). 



Hygromia revelata Ferussac in North Devon. — In August, 1917, I found 

 this animal on the high land at the back of Saunton, near Braunton. A few days 

 later I discovered large numbers on Baggy Point, near Croyde. This is of interest 

 as it forms a link between Hartland Point, where it was discovered by Mr. J. R. le 

 B. Tomlin, I think, and Ilfracombe, for which it has been recorded by Mr. C. P. 

 Hurst. Besides these two stations. The Lizard, Land's End District, Falmouth, 

 and Polperro have yielded me specimens in past years, so that I have had much 

 experience in looking for this snail. It seems to like a south or west aspect, very 

 near the sea, and I have found it chiefly at the roots of Heather. and under stones 

 round which Sedum acre and Rionex acetosella were growing. I think the latter 

 plant probably affords it its favourite food. —Alan Gardinkr {Read before the 

 Society, November I3lh, 1918). 



