JOURNAL OF CONCHOLOGY. 79 



NOTES ON SOME VARIETIES OF BRITISH SHELLS. 

 By T. D. A, COCKERELL. 



Limax laevis Miill. — A variety occurs on Barnes Common, 

 Surrey, which is parallel to the var. sylvatica Moq. of 

 L. agrestis. It differs from the typical form in being 

 irregularly spotted with dark -brown. I would propose to 

 call this form var. maculata, as no spotted variety of Icevis 

 seems to be described, unless the L. ?ne}itonicus Nevill 

 (P.Z.S., 1880) belongs to this species. 



Helix nemoralis var. compressa Terver. — Spire depressed. 

 Mr. J. H. James has sent me an example of this from 

 Truro, Cornwall, measuring alt. 15 mill. max. diam. 2 2-|. 

 He also sent an example of var. conica Baudon from the 

 same locality, with alt. 19 mill, and max. diam. 2\\. 



Helix arbustorum var. marmorata Taylor, 1882. Rofifiaen 

 described a var. marmorata in An. Soc. Mai. Belg., 1068, 

 which, of course, has priority, but the two forms do not 

 appear to differ from one another. 



Helix cantiana var. pyramidata Colb., 1868. — Smaller, 

 spire more raised, pyramidal. Maidstone, one specimen 

 (H. Lamb). 



Helix hortensis var. subalbida Locard.^ — ^Very pale, almost 

 white. Truro (J. H. James) and other localities ; not 

 uncommon. 



Helix pisana var. albida Moq. — Entirely whitish, or very 

 pale yellow. I have seen this from Tenby, South Wales. 



Clausilia rugosa var. parvula Turton. — Smaller and more 

 slender, nearly smooth. Clonmel, South Tipperary (A. H. 

 Delap). This variety bears a close resemblance to C. par- 

 vula Stud., and Turton described it as C. parvula, under 

 the impression that it was really C. parvtda Stud., it must 

 therefore stand as parvula Turt. (non Stud). 



