lOURNAl. OK CONCHOT.OGY, Voi,. 12. 



Plate H. 



J. IV. Jackson, Photoinicro. 



Vertigo moiilinsiana, V. lilljeborgi, and V. antivertigo, 

 showing variation in size, form and mouth. 



V. moulinsiana, 1—4, Tinnahinch, X o ; 5—6, Morden, Dorset, X 8 ; 7—8, Braunton Burrows, 



Devon, x8; 9—10, Wicken Fen, Xc,; 11 — 12, Bessungen, Darmstadt, X9. 

 V. lilljeborgi, 13 — 14, Connemara, X 10. \'. antivertigo, 15 — 16, Connemara, x 10. 



