1 66 HULL SCIENTIFIC AND FIELD NATURALISTS' CLUB. 



It occurs in fresh water except near Marfleet (see Trans. 

 III. p. 41). 



Holderness. — Pond near the guard bank, Saltend, Sept. 3rd, 1900 

 (F.W.F. T.P. Trans. I. p. 236). Ditch parallel to Humber bank 

 from Lords Clougb to Marfleet (T. Stainforth). Ditch inside the 

 guard bank, Saltend (T.P. Trans. III. p. 41). Burstwick drain and 

 drain east of Hospitals, Hedon, April, 1904 (T.P. N'at. 29, p. 141). 

 Common in the Burstwick drain from the locality marked on the 

 map to within a short distance of Burstwick, Aug., 1904 (T. P. ). 



Valvata piscinalis (Miill.). 



Derwentland.— R. Ouse at Xaburn (W.C.H. in X. & T. ; R.M.C.). 

 Derwent at Kirkham Abbey (Y.X.U. 1SS9). R. Ouse near Barlby 

 (Y.X.U. 1875). Wressle, Fleetdyke (G.R.). 



Wolds Lowthorpe(Y.N.U. 1890). 



Holderness. — Driffield (W.C.H. Xat. 12, p. 374) ; debris from canal 

 (J.D.B. circular 145). Brigham, moderately plentiful in canals and 

 ditches (L. B. Ross in X. & T.). Foston (L. B. Ross in X. & T.). 

 Leven canal ; Swinemoor; Figham ; R. Hull; moderately abundant 

 (J.D.B. 3). Leven canal; Skidby drain (J.D.B. 1). Skidby drain 

 (\V. Xelson J. of C. 6, p. 243). Hornsea Mere (Y.X.U. 18S1 ; 

 C. Reid, p. 83). Withernsea (Y.X.U. 1892). Dunswell ; Fleet 

 drain between Preston and Wyton ; Barmston ; Burstwick drain ; 

 fairly common in the larger drains (T. P.). Abundant in canal and 

 streams, Wansford and Foston (E,P.B.). Endyke Lane (J.W.B.). 



Var. antiqua Sowerby : — Fleetdyke, Wressle (G.R.). 

 Var. acuminata (Jeff.) : — In drift of Beverley Beck, and the Barmston 

 drain at Figham (J.D.B. 3). 



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

 p. 45; Reid, p. 82; T. Sheppard, Xat. 27, p. 366). Bridlington; 

 Valvata (Phillips, 1875, p. 83; W.C.H. Xat. 12, p. 374). Sandle- 

 mere (Reid, p. 84). South of Withernsea (W.D.R. J. of C. 7, p. S8). 

 Holmpton ; Mappleton ; Atwick ; Skipsea ; Ulrome (T.P. 1892). 



Valvata cristata Miill. 



Derwentland. — York, a few in the Ouse (R.M.C.). Ouse between Selby 

 and Barlby (Y.X.U. 1875). Pocklington canal (Y.X.U. 1S93). 



Wolds. — Lowthorpe (Y.X.U. 1890). Bridlington, common attached to 

 caddis cases in a pond near the railway on the west side of the line 

 to Scarborough (G. Wingate in X. & T. ). 



Holderness. — Leven canal, attached to caddis cases (J.D.B. 1 and 3). 

 Leckonfield Moat; drift of Beverlev Beck (J.D.B. 3). Hornsea 

 Mere (Y.X.U. 1881 ; C. Reid, p. 83). Haltemprice Lane ; Dunswell ; 

 Swine; Mappleton; Hedon; Thorngumbald ; not uncommon in 

 shallow pools and ditches (T. P. ). Inglemire Lane (J.W.B.). 

 Abundant, Wansford and Foston (E.P. B.). 



Subfossil. Sandlemere (G. Reid, p. 84). Skipsea (T. P.). Hornsea 

 (T.P. ; T. Sheppard Xat. 27, p. 366). 



