LAND AND FRESH WATER MOLLUSCA OF THE EAST RIDING. 1 49 



Var. i.nidentata C. Pfv. :— Brough or Welton (J.D.B. circular 69), 

 recorded as P. marginata, and distinguished from var. edentula which 

 is the type of P. muscorum. 



Subfossil :— Hornsea (H. F. Hall). Sewerby, cliff (W.C.H. "Flam- 

 borough," p. 136 ; G. W. Lamplugh, Nat. 28, p. 447). 



Vertigo antivertigo (Drap.). 



Wolds. - Filev, cliff (W.C.H, 2nd circular 1883). Risby, one specimen 

 (J.D.B. 3). South Cave (F.W.F. circular 111), probably referring to 

 Weedley Springs. Weedley Springs (T.P.). Kelleythorpe (T.P.). 



Holderness. — Hornsea, among moss near the Mere (F.W.F. Fretwell's 

 Guide and circular 150 ; T.P. Trans. I., 90). 



Vertigo pygmsea (Drap.). 



Not included in the Census, though forwarded to the 

 Conchological Society in 189 1 ; probably generally dis- 

 tributed over the Wolds. 



Derwentland.— York district, general (W.C.H. in R.M.C.). 

 Wolds— Speeton (W.C.H.; J.S.G. ; F.W.F. J. of C. 6, p. 39S). 



Flamborough (F.W.F. circular 116), probably refers to Speeton. 



Pocklington (Y.N.U. 1893). Beverley Westwood, var. quadridentata r 



scarce (J.D.B. 3). Drewton Dale (F.W.F. J. of C. 6, p. 398). South 



Cave (F.W.F. circular 116), probably refers to Drewton Dale. 



Kelleythorpe (T.P.). 

 Holderness. — Withernsea, on road to Holmpton, " probablv pygmaa '' 



(J.D.B. circular 99). Waxholme, in the cutting (Y.N.U. 1892). 



Hedon, railway bridge, among moss, var. quadridintata (T.P.). 



[Vertigo substriata (Jeff.). 

 Recorded for Hedon in error (T.P. Trans. I., 99).] 



[Vertigo pusilla Mull. 



Occurs about two miles beyond the Riding boundary on 

 a wall at West Ayton, where it was first found by the Rev. 

 W. C. Hey.] 



Vertigo edentula (Drap.). 



The commonest of the East Riding Vertigines, being 

 found in plantations throughout the district. It is not 

 included in the Census. 



Derwentland. — Langwith (J. Backhouse in R.M.C.). 

 Wolds. — Speeton (exhibited for F.W.F. at the Conch. Soc, J. of C. 6, 



p. 398). Flamborough (F.W.F. circular 116), probably refers to 



Speeton. Sledmere (Y.N.U. 1891). Brough and Welton (Y.N.U. 



1878 ; H. F. Parsons, Nat. 4, 90 ; J.D.B. circular 69). 



