56 LAXD AND FRESri-WATER MOLLUSKS. 



Helix pulcliella among earth at the roots of grass, (ISol.) 



Succinea putris, Flem. — Common by the sides of ditches. 



Succinea PfeiflPeri, Ross. — Frequent with the above species. 



Bulimus obscurus, Drap. — Not very common: Landport and Ashcombe. 



Pupa umbilicata, Drap. — In old walls and under chalk stones: very common. 



Pupa marginata. — Equally common at the roots of grass and "moss on the 

 Downs, and under loose flints. 



Pupa Juniperi, G^rffy.— Plentiful under loose chalk stones in the "Home Pit," 

 first pointed out to me in this locality by ray friend, Mr. C. Potter; occasi- 

 onally found on a chalky bank near Landport. 



Vertigo edentula, Gray. — Rare: Chailey common. I have never found but 

 two specimens, and those on the under side of Filix mas, (Male Tern.) 



Vertigo pygmaea, Fer. — Rare at the roots of moss and grass on the eastern 

 bank of Ashcombe plantation, (I80O.) 



Vertigo palustris, Leach.— Three specimens by the side of a ditch In the 

 level at different periods. 



Balaea perversa, Flem. — Not uncommon under lichens and the bark of thorns 

 on the Downs, frequently several together. 



Clausilia bidens, Drap. — At the roots of beeches among the fallen leaves 

 in Ashcombe and Coombe plantations, and in the crevices of an old tree near 

 Landport: not rare. 



Clausilia nigricans, Je/J'. — Abundant in the neighbourhood. The variety G. 

 parvula I have frequently met with. 



Carychium minimum, Leach. — Rare: at the roots of moss, {Hypnum lutes- 

 cens and cuspidatum,) on a moist bank sloping towards the '^'Cut," near 

 Landport, (1852, May 19th.) 



Limneus auricularius, Drap. — In the '^^Cut" rare, but perhaps from the want 

 of more dilio-ent searchingr. 



Limneus pereger, Drap. — Abundant in every ditch. 



Limneus stagnalis, Drap. — Common in stagnant ditches. 



Limneus var. fragilis, Tiirt. — In the Pells, 



Limneus palustris, Drap. — Very common. 



liimneus truncatulus, Jeff. — On the mud, principally by the side of the 

 ^^Cut," near Landport, rather plentiful: this is the only locality in which I 

 have seen it hereabouts. 



Limneus glaber. Gray. — In a ditch near Mailing. 



Ancylus fluviatilis. Mid. — On stones in the "Cut," and on the underside 

 of the submerged leaves of the Nuphar lutea, (Yellow Water-Lily.) 



Velletia lacustris. Gray. — On the leaves of the N. lutea with the preceding 

 species, (May, 1852:) not rare. 



Physa fontinalis, Drap. — Common: on aquatic plants in all the ditches 

 round Lewes. 



Planorbis corneus, Drap. — In the ditches. Mailing; very fine in ditches, 

 Pevensey level. 



