Yorkshire Naturalists at Filey. 
255 
Conchology. — Mr. Thomas Castle writes : — With the 
exception of a valley on the wolds leading down into the site 
of the ancient lake in the Pickering Valley where Helix aspersa 
and H. nemoralis abounded, almost all species were scarce in 
numbers, and diligent search had to be made at the roots of 
grasses, etc., for most of those enumerated below, the exception 
being Succinea elegans which is located near the moist places 
on the cliffs of Boulder clay. Several ponds yielded fresh- 
water types, but such species as Limncea peregra and L. palus- 
tris were not up to the standard met with on previous occasions. 
Helix aspersa. 
H. nemoralis, var. libellula band 
formula 1-2, 3-4, 5. 
H. nemoralis, var. libellula band 
formula (1-2), 3- (4-5). 
H. nemoralis, var. libellula band 
formula 1, 2, 3, -(4-5). 
H. nemoralis, var. libellula band 
formula (1-2, 3), (4-5). 
H. nemoralis, var. rubella band 
formula 1-2-3-4-5. 
H. nemoralis, var. rubella band 
formula (1-2, 3-4-5). 
Helicella itala. 
„ virgata. 
Candidula caperata. 
Hygromia hispida. 
,, rufescens. 
Vitrina pellucida. 
Polita cellaria. 
,, nitidula. 
Cochlicopa lubrica. 
Lauria cylindracea. 
Succinea elegans. 
Limyicea peregra. 
,, palustris. 
,, truncatula. 
Planorbis vortex. 
,, spirorbis. 
Pisidium fontinale. 
Rev. F. H. Woods states that Acroloxus lacustris was 
found in considerable quantities on the stems of Potamogeton 
natans in a pond on the coast south of Filey. 
Geology. — Mr. Stather writes : — The geologists had a very 
pleasant time at Filey. On Saturday, Filey Brig and Carr 
Naze were carefully explored. Characteristic fossils were 
secured from the upper layers of the Calcareous Grit, and, 
on the hard beds immediately under the Boulder Clay, glacial 
strife were traced, and many striking instances of ‘ terminal 
curvature ’ were noted. Far-travelled pebbles and boulders 
from the Glacial Clays were collected, including a specimen of 
Shap Granite. On the top of the Naze indications of a kitchen 
midden were seen, probably dating back to Roman times. The 
site of the Filey old Spa Well, so much in vogue a century 
ago was also visited, and the little stream of rusty-coloured 
Spa water was still oozing from the adjacent Boulder Clays. 
From the crest of the great bank of Boulder Clay near the 
Spa Well a very fine and comprehensive view of the Yorkshire 
coast and district was obtained. 
On Sunday a trip was taken inland, the route being through 
the villages of Muston, Flotmanby, Flixton, Forden, North 
Burton and Hunmanby. From Filey to Muston the road 
passes over the hummocky ground composed of morainic 
material, the product of the great glaciers which once filled the 
North Sea basin. Westward from Muston, the drifts gradually 
19)4 Aug. 1. 
