40 THE NON-MARINE MOLLUSCS OF ESSEX.
A.— Walthamstow; (British Museum).
B.—Bushey Leys ; *Felstead ; (French) : *Copford : (British
Museum): Shalford: (W.M.W.): -Chignal: (Christy, 3):
Roxwell; (R. Christy).
Genus—VALLONIA, Risso, 1826.
Vallonia pulchella, Muller + costata.
A.—Farnham ; (Ingold): Roding Meadows, Wanstead; Bark-
ing Side ; (Crouch) : East Tilbury ; (E.N., vol. iv.,
p.227): Warley; (W.M.W.): Canning Town; (K. and W.):
Ilford; Walthamstow; (British Museum) : Crossness ; (Wood-
ward) : Grays and Tilbury ; (British Museum).
B.—Felstead ; (French) : *Coggeshall ; (British Museum) :
Colchester—and ribbed variation ; (Laver) : Pleshey
Mount—and ribbed variation; (Christy, see also figure in
Taylor's Monograph of the Land and Freshwater Mollusca
of the British Isles, vol. L, 1894, p. 27) : Chelms-
ford; (Christy): [Felstead; (French):] *Copford ; (British
Museum) : * Clacton ; (Webb, 4, and British Museum) : Wit-
ham ; (British Museum) : Shalford: (W.M.W.): *Chignal;
(Christy, 3) : Roxwell; (R. Christy).
C.—Saffron Walden ; (S.W. Museum) : Wrabness ; (Sheppard
Collection) : Harwich ; (British Museum).
Genus—HELICODONTA, Ferussac, 1819.
[Helicodonta obvoluta, Muller.] Living only in Hampshire and
Sussex. Fossil from Barnwell, Cambridgeshire.
Genus—HELICIGONA, Ferussac, 1819.
Helicigona lapicida, Linne.
A.—Elsenham ; (Hughes) : Hallingbury ; (Ingold) : Canning
Town; (K. and W.): Crossness: (Woodward).
B.—Wimbish—"no keel;" (Christy) : Sible Hedingham—
"dead shells;" (Adams) : Finchingfield; (Bailey): Fel-
stead ; (French) : *Coggeshall ; (Turner) : † Colchester ;
(Laver, E.N., vol. vii., p. 67) : Layer-de-la-Haye—" one
dead shell;" (Laver) : Chignal; (Christy) : Chelmsford ;
(Turner) : Doddinghurst—" one dead shell ;" (C.S.R.,
Christy) : [Felstead; (French) : ] *Copford; (British
Museum): ''Chignal; (Christy, 3): Roxwell; (R. Christy).
C.—Saffron Walden ; (S.W. Museum and Christy).