THE POST-PLIOCENE NON-MARINE MOLLUSCA OF ESSEX. 93
There are also at South Kensington thirteen species from
Raine and four from Braintree. The shells from the latter
locality are :—
Planorbis nautileus Valvata piscinalis
Bythinia tentaculata ,, cristata.
From the former were taken : —
Velletia lacustris Planorbis spirobis
Limnaea auricularia ,, contortus
,, pereger ,, fontanus
Planorbis glaber Bythinia tentaculata
,, nautileus Valvata cristata
,, marginatus Pisidium fontinale
Limnaea stagnalis.
Since the several deposits from which these shells were
obtained are close together, and are without doubt of the same
age, it has been considered advisable to list them together.
FELSTEAD.
Attention was first called to this deposit in 1882 by Mr. J.
French (24) who gave a short description and probable history
of the various recent beds in his parish and incidentally men-
tioned the occurrence of several species of shells. This was
supplemented in 1889 by a further paper (27) and a list of forty-
two names given, many of which had been identified by Mr.
J. W. Taylor, of Leeds. Through the kindness of Mr. W. M.
Webb we have been able to verify six species from examples
now in the Essex Field Club's Museum ; but the original
specimens have so far not been seen by us.1 This is the
more to be regretted because this deposit is without doubt one of the
most interesting in the county. The six species we have seen
are :—
Acanthinula aculeata Vertigo substriata
,, lamellata Pomatias elegans
Pupa anglica Acicula lineata.
Two of the records are probably incorrect, viz., Helicella
cantiana and H. carthusiana, and we have omitted them, the
remainder are listed on the authority of Mr. French. We would,
however, here point out that we have ignored in our remarks
and conclusions all records which we have been unable to verify.
1 Mr. French is very kindly going to send the specimens for verification, but too late for
comment in the present paper.