138 HULL SCIENTIFIC AND FIELD NATURALISTS' CLUB. 



Helix aculeata Mull. 



Not in the Census, though recorded for all three divisions. 

 It is fairly common in plantations- in Holderness and on the 

 Wolds. 



Derwentland. — York district, rare (S.W.N.) ; rare, Langwith (J. Back- 

 house in R.M.C.). 



Wolds.— Sledmere (Y.N.U. 1891). South Cave (F.W.F. circular in), 

 probably referring to Drewton Dale. Drewton Dale (T.P. ). 

 Brough (F.W.F. circular 157). Chalk pit at Tibthorpe (E.P.B.). 



Holderness. — Beverley Westwood, scarce ; plantation near Long Lane, 

 moderately common on decayed wood (J.D.B. 3). Hornsea, woods 

 at Wassand end of mere (F.W.F. Fretwell's Guide and circular 150); 

 woods north of mere (T.P. ). Bale Wood, Aldborough (T.P. Trans. 

 I. 99). Twyers, Hedon, spinney north of the railwaj r , Dec. 31, 

 1903; Kelsey Hill, April 4, 1904; Tansteme ; Birkhill Wood; 

 Humbleton (T.P.). 



Helix pulchella Mull. 



Derwentland. — York district, common about York (W.C.H.); rather 

 rare, hedgebanks, Heslington (H. Richardson in R.M.C.). Aller- 

 thorpe (Y.N.U. 1893). 



Wolds.— Filey (Y.N.U. 1903). Bempton station (W.C.H. Nat. 12, p. 

 374, and " Flamborough," p. 136). Flamborough (F.W.F. circular 

 116). North Grimston station, several (Y.N.U. 1902) Hessle, 

 Beverley, Skidby, Welton (J.D.B. 1). Brough and Welton, (Goole 

 Sc. Soc. Nat. 2, p. 179; J.D.B. circular 69; F.W.F. circular 157). 

 Drewton Dale ; Brantingham ; Sledmere (T. P. ). 



Holderness. — Drift, Beverley Beck (J.D.B. 3). Hornsea, under moss in 

 a field near the mere (J.D.B. 2). Withemsea (F.W.F. circular 99). 

 Generally distributed throughout Holderness, but seldom abundant; 

 frequent under stones on roadsides near the sea ; Kelsey Hill, 

 abundant among wet moss ; Marton, footpath to Withernwick ; 

 Spurn ; Mapplcton ; Hedon ; Lelley ; Tansterne ; Aldborough 

 (T. P. ). Driffield, in great quantities on Wansford Road and 

 generally (E.P.B.). Cottingham (J.W.B.). 



Var. costata Mull. :— Skidby ; Welton (J.D.B. 1). Brough and Welton 

 (J.D.B. circular 69; F.W.F. circular 157). Harland Rise and 

 Westwood, abundant (J.D.B. 3.) Drewton Dale ; Sledmere (T. P.). 

 Mappleton ; Kelsev Hill ; Hornsea ; the usual form under stones in 

 dry places (T.P.).' Cottingham (J.W.B.). 



Sub-fossil; Hornsea beach, (H. F. Hall). Sewerby cliff (W.C.H. 

 " Flamborough," p. 136). 



[Helix lapicida Linn. 



Included in the Census. No published records of this 

 species have been found relating to the East Riding. 

 Helmsley seems the nearest locality.] 



