122 JOURNAL OF CONCHOLOGY, VOL. 12, NO. 5, JANUARY, I908. 



Acanthinula aculeata Miill. — Rare in moss, 

 var. albida Jeff. — -A single living specimen. 



Vallonia excentrica Sterki. — Several examples. 



Helix aspersa Miill. — In gardens. 



H. nemoralis L. — Apparently very scarce, but this may be due 

 to the time of year. 



Cochlicopa lubrica Miill. — Very common, 

 var. hyalina Jeff. — -Several specimens in moss. 



Jaminia anglica Fer. —Very local but common. 



J. cylindracea DaC. — Common, 

 var. curta West. — ^With the type. 



Vertigo substriata Jeff.— Rare. 



V. pygmaea Drap. — Common. 



Balea perversa L. — Obtained in great numbers by beating old 

 and half-dead branches of gorse. 



Clausilia bidentata Strom. — Fairly common. 



Phytia myosotis Drap. — A single example at the landing-place. 



Limnaea truncatula Miill. — A few very fine examples in a pond 

 towards the Shutter rock. 



Pisidium pusillum Gmel— In ponds. 



var. grandis Adams. — Common in a quarry pond on the east 

 side. 



The Colonization of Molluscs. — I wish we had more faunistic papers and 

 notes in the /otirnaL I suggest the subject of artificial colonization. Last year 

 having become possessed of a strip of chalky bank by the sea in Kent, I turned out 

 there some hundreds of immature specimens of Helix virgata of the variety radiata 

 obtained from Rye. It would seem an excellent spot for this chiefly maritime 

 variety, but this year not a specimen can I find. I purposely turned out immature 

 specimens since I believe that attempts to colonize often fail from the fact that 

 adults are deposited, and that, after they have laid their eggs. In such a case only 

 dead shells are likely to be found next year. I have also several times, and in 

 several spots, as like as could be to their only British habitat, and usually not very 

 far from it, endeavoured to form fresh colonies of Turricola terrest7-is, but in no 

 case with a shadow of success. With the same soil, the same kind of vegetation, 

 the same aspect, in the same county, care being taken that young and not moribund 

 specimens are selected for the experiment, success should be anticipated. Yet it 

 never seems to come to me or to others whom I have consulted. Attempts to 

 transfer H. pomalia from one chalky lane or down in Kent or Surrey to 

 another also fail. Why? I invite the record of experiences and of suggestions. — 

 [Rev. Canon] J. W. Horsley. {Read before the Society, September nth, 1907). 



Unio tumidus v. ponderosa Pascal in Leicestershire. — In Jeffreys' "British 

 Conchology" (1862, p. 36) I find that Unio tumidus oi^'- the great size of 4^^^ inches 

 in breadth and 2\ inches in length, and weighing 2 oz. 6 dr.," is noted as having 

 "been taken by Mr. Norman in ponds at Wistow in Leicestershire." The large 



