l68 HULL SCIENTIFIC AND FIELD NATURALISTS CLUB. 



Muscuhis angustior. Hist. Anim. Angl. p. 149, tab. 2, f. 30; Appendix 

 p. 12, tab 1, f. 6 ; Hist. Conch, tab. 147, f. 2 ; (ed. Huddesforth 



1770). 



Mitsculus angustissimus. Appendix p. 13, tab. 1, fig;. 4; Hist. 

 Conch, tab. 147, fig;. 3. 



Anodonta cygnea (Linn.). 



Derwentland.— York, R. Ouse (W.C.H.). Ouse at York (T. Brown, 

 " Illustrations," p. 79). Newsholme (J. Beanland). 



Wolds.— Kildwick Percy (Y.N. U. 1885; circular 106 ; Y.N.U. 1893). 

 Boynton fish pond (W.C.H., Nat. 12, p. 374). Lowthorpe (L. B. 

 Ross, circular 84). Risby (J.D.B. 1) ; (Beverley F.N. and Sc. Soe. 

 Nat. 7, p. 170), one specimen ; much less numerous than formerlv 

 (J.D.B. 3). 



Holdemess. — Driffield canal (L. B. Ross and J.D.B. circular 145). 

 Leven canal (empty shells, J.D.B. 1; fragments J.D.B. 3). Hornsea 

 Mere "thick, tumid and narrow" W.C.H. ; J.D.B. 1 ; abundant 

 J.D.B. 2; "probably incrassata" 3rd circular 1881; F.W.F. 

 Fretwell's Guide and circular 150; T.P. Trans. 1, p. 104). Barmston 

 drain, empty shells (J.D.B. 1). Cotting-ham, broken shells in fields 

 probably carried by birds (J.D.B. 3). Foston (E.P.B.). 



Subfossil. anatina: — Owthorne but not elsewhere (Phillips, 1829, p. 

 35 : J 875> P- 7 2 4)- Hornsea (Phillips, 1S75, p. 72 ; Reid, p. 82). 

 Sandlemere (Reid, p. 84). Unto, Hornsea (H. F. Hall, pp. 41 and 

 45). Dimlington (?) (H. F. Hall, p. 39). It is impossible to obtain 

 entire specimens, but judging from their size all should be referred 

 to cygnea ; Mappleton ; Skipsea (T. P. ). 



Anodonta anatina (Linn.). 



Derwentland. — York, to be found in the Ouse in any quantity (R.M.C.). 

 Wressle, Fleetdyke, var. ventiicosa, dead shells (G.R.). 



Holderness. — Hornsea Mere (J.D.B. 1 ; J.D.B. 2 ; T.P., Trans. I., p. 104 ; 

 C. Reid, p. 83) ; the last probably refers to cygunz, which is not 

 recorded by Reid. Burstwick drain ; Key ingham drain ; brickpond, 

 Hestholme, near Ridgmont (T.P. Trans. I., p. 104). 



Var. radiata Jeff. : — Burstwick drain (T.P.). 



Sphserium corneum (Linn.). 



Derwentland. — York, "in aquis stagnantibus circa Eboracum copiose " 

 (Lister, Hist. Anim. Angl., p. 150, and App., p. 14) ; common every- 

 where (S.W.N.) ; fine and abundant throughout the district generally 

 (R.M.C.). Ditch parallel to Ouse between Selby and Barlby (Y.N.U. 

 1875). R. Derwent at Kirkham Abbev (Y.N.U. 1889). Pocklington 

 canal (Y.N.U. 1893). Wressle, near the castle ; Fleetdyke, between 

 Wressle and Bubwith (G.K.). Bubwith aud Breighton (J.D.B. 

 circular 75). 



Wolds.— Filey (Y.N.U. 1903). Flamborough (F.W.F. circular 116). 

 Brantingham (J.D.B. 1 ; J.D.B. circular 69). Brough (N. & T.). 

 Risby (T.P.). 



