LAND AND FRESH-WATER SHELLS. 247 
the magnesian limestone at Thorparch, very near the border of 
our district. 
Var. albida.—Also at Thorparch. 
Helix concinna.—Abundant on nettles beside the Foss, and 
elsewhere. Skelton Lane (H.) 
Var. albida.— Common among the rest. 
Helix hispida.—Less abundant, but common under stones and 
among the roots of grass. 
Var. albida.—A few here and there. 
Helia sericea.—Near Huntington several years ago, according 
to a gentleman belonging to the Yorkshire Naturalists’ Union. 
Helix fusca.—Specimens labelled ‘‘ York” are in the British 
Museum; but it must be very scarce. Castle Howard (H.) 
Helix virgata.—Less common, of course, than if we were near 
the sea. I found a single specimen along the roadside between 
York and Stockton-on-the-Forest. Abundant at Castle Howard, 
and on the Tadcaster road where the road from Copmanthorpe 
joins it, but nowhere of large size. 
Var. alba.—Common at Castle Howard, but none, or only very 
few, at Copmanthorpe. 
Helix caperata.— Generally a common enough shell, but here 
I am surprised by its almost entire absence. I have found a few 
at Linton-up-Ouse, and a few in the drift of the river itself. 
Bleached specimens in ploughed fields beyond Dunnington 
Common (R.) Near Acomb Wood and near Knapton (R.) 
Var. Gigaxi.—A few from drift of the Foss (R.) 
Helix ericetorum.—A single specimen in the Ouse rejectamenta 
is all that I have met with. 
_ Helix rotundata.—Every where. 
Var. Turtoni.—Fairly common. It is flat above, but must not 
be confounded with the young. 
Var. alba.—Mr. Jefireys mentions York as a locality for this 
variety. Ihave one specimen, found, with many of the type-form, 
on a large log lying beside the Wiggington road. 
Helix pygmea.— According to the ‘ Observer,’ this was found 
near York by the Bootham collectors in 1849, but no locality 
is given. Queen Elizabeth’s Walk (B.) Drift of Ouse (R.) 
Askham (R). 
Helix pulchella.—Rather rare, but abounds among the roots 
of the grass on the lawn at 20, Bootham. Rejectamenta of 
