154 HULL SCIENTIFIC AND FIELD NATURALISTS CLUB. 



Wolds. — Filey, on caddis cases (Y.N.U. 1903). Burlington (W.C.H. 

 G. Wingate in N. & T.); (W.C.H. circular 62); pond filled up 

 (W.C.H. " Flamborough " p. 137). Risby, in the Acorns calamus 

 pond, Aug. 1902 (T.P.). 



Holderness. — Leckonfield Moat, sparingly (J.D B. 3). Hornsea Mere 

 (J.D.B. in N. & T. ; C. Reid, p. 83 ; F.W.F. Fretwell's Guide and 

 circular 150; E.P.B. ; T.P.). Burstwick, ditch on side of road to 

 Burton Pidsea ; Withernsea, pond on cliff; Rise (T. P. Trans. I. 

 p. 102). North Frodingham; Wansford (E. P. B.). Salt Ings Lane 

 (J.W.B.). 



Subfossil. Skipsea (F.W.F. Fretwell's Guide; T. P. Trans. I. p. 102). 



Planorbis nautileus (Linn). 



Very common in South Holderness near the Humber, 

 but apparently becoming rarer further inland : it is one of 

 the first shells to appear on recent reclamations. 



Derwentland. — York district (S.W.N.) ; ponds near York (W.C.H.) ; 



rare in the Ouse (H. Richardson in R.M.C.). Cowbridge, near 



Newport : pond near Sleight's House (Wm. Nelson, J. of C. 5, pp. 



262-267). 

 Wolds. — Flamborough, (F.W.F circular 1 16). Pond near Danes Dyke 



House (Y.N.U. 1886; W.C.H. " Flamborough" page 137). 



Holderness.— Hornsea Mere (Y.N.U. 1881 ; C. Reid p. 83). Withernsea 

 (F.W.F. circular 99). Holderness ponds and dykes (F.W.F. 

 circular 140). Pond at Springhead, Hull (J.D.B. 1). Ditch 

 bordering Swinemoor, Beverley (J.D.B. 3). Ditches and ponds, 

 Mar-fleet to Patrington : ponds on the Humber bank and inland, 

 Marfleet (T. P. Trans. I. 102). Hedon ; Patrington; Waxholme ; 

 Kilnsea ; pond, roadside between Sutton and Wawne (H. E. John- 

 son) ; (T.P.). 

 Var. crista (Linn.) Swinemoor with type, abundant (J.D.B. 3). Spring- 

 head, Hull (J.D.B. 1). Withernsea (F.W.F. circular 99). Holderness 

 ponds and dykes (F.W.F. circular 140). Hedon ; Patrington ; 

 Waxholme (T. P.). 

 Subfossil. Hornsea (Hall p. 45 : C. Reid p. 82). Mappleton ; Atwick ; 

 Skipsea (T. P. 1892). 



Planorbis albus (Linn). 

 Appears to be rare in Derwentland ; it is not recorded in 

 lists for Wressle or Howden. 



Derwentland. — York, somewhat rare (S.W.N.) ; sparingly distributed 

 (R.M.C.). Pocklington canal (Y.N.U. 1893). 



Wolds. — Bempton, very fine in ponds close to the precipice (430 ft.) 

 (W.C.H. ; W.C.H., "Flamborough" p. 137). Flamborough, ponds 

 near the cliffs very fine (W.C.H. circular 62; F.W.F. circular 116). 

 Kildwick Percy (Y.N.U. 1885 ; circular 106). Londesborough 

 (J.D.B. circular 75). Brough (J.D.B. circular 69). Welton, pond 

 at entrance to dale and stream through village (J.D.B. 1 ; J.D.B. 

 circular 69; Y.N.U. 1887; Y.N.U. igor). North Cave (T. P.). 

 Risby (T.P.). 



