6o LIMN^ID^. 



suture deep; mouth very large. Lakes, ponds, and canals, 

 attaining sometimes a considerable size, B.C. 



Var. 5. acuminata. — Shell resembling the last variety in all 

 respects, except in having a more produced spire and a smaller 

 mouth. With the last, B.C. 



Var. 6. intermedia. — Shell rather compressed towards the 

 front margin, and thinner than usual ; spire more produced ; 

 mouth expanded. Ponds, B.C. 



Var. 7. oblonga. — Shell oblong and compressed in front. 

 Lewes, Suffolk, Church Stretton, Salop, Bearhaven, Co. Cork 

 (J. G. J.), B.C. Marsh at Hamstead, near Birmingham 

 (G. SherriffTye), 7.C 



Var. 8. labiosa. — Shell smaller, having the outer lip remark- 

 ably expanded and reflected. Appin, Argyleshire (Bedford), 

 B.C. Sutton Park, near Birmingham (G. Sherriff Tye), y.C 



Var. 9. picta. — Shell rather smaller than the last, and beauti- 

 fully marked by alternate bands of brown and white, which are 

 sometimes confluent. Ulva, I. Hebrides (Bedford), B.C. 



Var. 10. maritima. — Shell dwarfed, rather solid ; spire pro- 

 duced ; suture deep. Marshes on the sea-coasts of Glamorgan- 

 shire and North Devon (J. G. J.), B.C. 



Var. II. succineceformis. — Shell shaped Hke a Succinea, and 

 very thin ; whorls 4 ; spire small and oblique. Kensal Green 

 (J. G. J.), B.C. 



Var. 12. albida. — Shell of a very clear white colour. Near 

 Askern, Yorkshire (Lister Peace), J.C. 



The following monstrosities also occur : — 



Monst. I. — decollata. — Shell more or less eroded; spire trun- 

 cate. Church Stretton, Oxwich, near Swansea (J. G. J.), B.C. 

 Several localities near Birmingham (G. Sherriff Tye), J.C. 

 Warwickshire (McMurtrie). 



Monst. 2. — sinistrorsa. — Shell spire reversed, rather solid, 

 spiral ridges distinct. Scarborough (Bean), pond near Balta, a 

 single specimen (Waller), B.C. 



Monst. 3. — scalar if orniis. — Shell oblong, with deep and regular 

 strice ; whorls more or less disjointed, suture consequently deep. 

 Warminster (J. G. J.), B.C. Sutton- Coldfield near Birming- 

 ham (G. Sherriff Tye), J.C. Warwickshire (McMurtrie). 



