156 HULL SCIENTIFIC AND FIELD NATURALISTS' CLUB. 



superiore, ibi velut acies. . . . Circa Eboracum in aquis 

 stagnantibus aliquoties earn inveni. In fossis ad fluvium 

 Darwent juxta Bubwith Ferry magna copia habentur. " 

 — Lister, Hist. Anim. Ang., p. 146. Messrs. Nelson and 

 Taylor consider that this refers to the last species ; Dr. 

 Jeffreys, following Montagu, Donovan, Pennant, &c, thought 

 it indicated vortex. The comparison is with carinatus 

 (" e medio orbe limbus notabilis exstat "). It is generally 

 agreed that vortex is rarer in East Yorkshire than spirorbis. 



Derwentland — York district, common (S.W.N.) ; by no means common 

 or widely distributed (R.M.C.). Kirkham Abbey (Y.N.U, 1889). 

 Pocklington Canal (Y.N.U. 1893). Riccall (N. & T.). Wressle, 

 Fleetdyke, and near the Castle (G.R.). Pond near Howden Station 

 (X. & T.). Sandholme and Ousethorpe (W. Nelson, J. of C. 5, pp. 

 262-67). Bubwith (J.D.B. circular 75). Selby Cut ; ditch alongside 

 Selby Cut ; Newsholme (N. & T.). 



Wolds. — Brantingbam (J.D.B. circular 69). 



Holderness— Driffield (W.C.H. Nat. 12, p. 374); plentiful in R. Hull 

 (L. B. Ross in N. & T.) ; debris in canal (J.D.B. circular 145). 

 Skipsea, pond near the coast (N. & T.). Hornsea Mere (J.D.B. 2). 

 (Y.N.U. 18S1 ; C. Reid, p. 83). Withernsea (F.W.F. circular 99). 

 Fis^ham, and drift of Beverlev Beck, not common (J.D.B. 3). 

 Figham (N. & T. ; J.D.B., J of C. 3, p. 177). Hull district, not as 

 common as spirorbis ; Spring Dvke ; Beverlev and Barmston Drain 

 (J.D.B. 1). Thorp Garth, Aldborough ; Hedon ; Burstwick (T.P). 

 Typical vortex is rare in Holderness. Lambwath stream, nearSkir- 

 laugh (T.P.). Haltemprice Lane (J.W.B.). Common (E.P.B.). 



Subfossil. Hornsea (H. F. Hall, p. 45). 



Planorbis carinatus (Mull.). 



Derwentland. — York district, common and well distributed (R.M.C.). 



Pocklington Canal (Y.N.U. 1893). Riccall; Howden; Selby Cut 



(N. &T.). 

 Wolds.— Bridlington (G. Wingate in N. & T.). 

 Holderness. — Driffield Canal (L. B. Ross and J.D.B. circular 145). 



River Hull at Driffield (L. B. Ross in N. & T.). Leven Canal ; 



Beverley (J.D.B. 1). Leven Canal; Fig-ham; Leckonfield Moat, 



local and not plentiful (J.D.B. 3). New Holland, near Meaux 



(W.D.R. in N. & T.). Hornsea Mere (J.D.B. 2; Y.N.U. 1881 ; 



C. Reid, p. 83); exceedingly fine (F.YYF. Fretwell's Guide and 



circular 150). Withernsea (F.W.F. circular 99). Keyingham drain ; 



Kelsey Hill; Ryhill drain, local (T. P.). Endyke Lane (J.W.B.). 



Common (E.P.B.). 



Subfossil. Bridlington (W.C.H. Nat. 12, p. 374). 



Planorbis umbilicatus (Mull.). 



Derwentland. — York district, abundant (S.W.N.) ; very common 

 (W.C.H.). Nabtirn Lock, plentiful 1887 (J. Grassham). Riccall; 

 Bubwith ; common in ponds near Barlby Bank, Selby (W.D.R.). 



