vol. xx. (2) FRESH-WATER MOLLUSCA OF GLOUCESTERSHIRE 143 
FURTHER NOTES 
ON 
THE LAND AND FRESH-WATER MOLLUSCA 
OF GLOUCESTERSHIRE. 
BY 
CHARLES UPTON. 
Since the publication of the last notes on local mollusca 
( Proceedings , xix., 229) but little has been done in the way of 
finding additional forms. This is due in a large measure to 
the fact that, with comparatively few exceptions, all the forms 
likely to occur in the county have already been recorded. 
Another contributing cause is that the autumns of both the 
years 1918 and 1919 were unfavourable to land snails. The 
former, although wet, was cold, and the latter very dry, neither 
condition being good. 
A few errors in the previous lists escaped observation and 
are noted below, together with some two or three cases of 
probable misidentification. Such new or additional records as 
have come to my knowledge are also set out, with some 
observations concerning forms already recorded. 
Corrections of Previous Lists in “ Proceedings.” 
Volume xvii. (1911) 
Page 180, line 22, for V. [crystallina] read Vitrea. 
Page 183, line 11, for H. rufescens read H. hispida. 
The descriptions on pp. 180-81 of Vitrea pura and V. pura 
var. nitidosa should be transposed. J. Gwyn Jeffreys 
in British Conchology gives the horn-coloured form as 
Alder’s type, and the white form as the var. nitidosa, Gray, 
but there is no doubt that he was in error in doing so, and that 
Alder’s type was the white — and commoner — shell. The 
specific name indeed would indicate this. 
6 
