LAND AND FRESH WATER MOLLUSCA OF THE EAST RIDING. I 39 



Helix aspersa Mull. 



Derwentland. — York district ; everywhere (S.W.N.) ; far too common 

 (R.M.C.). Wressle(G.R.). 



Wolds.— Filey, cliffs (W.C.H. 2nd circular 1883 ; Y.N.U. 1903). Bempton 

 (J.S.G.). Flamborough (F.W.F. circular 116). Burlington 

 (W.C.H.). Bridlington (W.C.H. circular 62; Y.N.U. 1886). 

 Lowthorpe (L. B. Ross, circular 84; Y.N.U. 1890.) Sledmere 

 (Y.N.U. 1891). North Grimston (Y.N.U. 1902). Kildwick Percy 

 (Y.N.U. 1885; circular 106). Sancton (Y.N.U. 1888). B rough and 

 Welton (J.D.B. circular 69; F.W.F. circular 157; Y.N.U. ,1901). 

 Ferriby, Humber bank (J.D.B. circular 69). 



Holderness. — Driffield (T. W. Bell, J. of C. 5, p. 221) ; "banks of canal 

 (L. B. Ross and J.D.B. circular 145); found generally (E.P.B.). 

 Leckonfield ; Long Lane, Pighill Lane, Cherry Tree Lane, Queens- 

 gate Road, and gardens, Beverley (J.D.B. 3). Meaux (J.D.B. 

 3). Hornsea, extremely abundant, especially near the sea (J.D.B. 

 2). Withernsea (J.D.B. Nat. 17, p. 253). Spurn (5th circular 

 18S4; Y.N.U. 1884; Y.N.U. 1904). Hull district, common (J.D.B. 1). 

 Everywhere (T. P. ). 



Yar. conoidea Picard : — Bridlington Ouav, road to Flamborough 

 (W.C.H. in J.W.T.,J. ofC. 4, pp. 89, &c. ; W.C.H. circular 62). 



Var. minor Moq. :— Riccall (J.W.T. loc. cit.). Filey; Spurn (T.P.). 



Yar. tenttior Shuttl. : — York district; common (R.M.C.). "This 

 variety has been several times recorded for Yorkshire, but without 

 sufficient foundation " (J.W.T. loc. cit.). 



Yar. flammea Picard : — Burstwick (T. P. ). 



Yar. cxalbida Menke : — Bridlington, road to Flamborough (W.C.H. 

 in J.W.T. loc. cit.; W.C.H. circular 62 ; Y.N.U. 1886; F.W.F. 

 circular 116; W.C.H. "Flamborough" p. 136). Hornsea (F.W.F. 

 Fretwell's Guide and circular 150; T. P. Trans. I. 100); first 

 found by Mr. J. W. Boult ; it occurs here on a hedge bank faced 

 with cobbles ; though the bank is about four hundred yards in 

 length, it is only found over a distance of two or three yards, 

 and seldom more than two specimens at once; 1891-1903 (T.P.). 



Helix nemoralis Linn. 



Interesting details of the differences in colouring, weight, 

 •&c, between specimens from the Wolds and from Scar- 

 borough are given by Mr. W. Gyngell, Science Gossip, 

 n.s., vol. 7, 1900-01, p. 286. It appears to be equally 

 •common in all districts ; perhaps most abundant in Holder- 

 ness though this is uncertain since the number seen depends 

 altogether upon the weather. It is very abundant on Spurn 

 Point — a range of sandhills with the smallest rainfall in 

 England. 



Derwentland. — York district; abundant (S.W.N.) ; not nearly so 

 common as might be expected; Heslington IR.M.C). Fulford 

 (H. Richardson in R.M.C.). Allerthorpe (Y.N.U. 1893). Howden 

 (Wm. Nelson, J. of C. v. pp. 262-67). Wressle (G.R.). 



