YORKSHIRE NATURALISTS’ UNION AT POCKLINGTON. 63 
of the day were confined to the roads leading to Alierthorpe Common, 
the Common, and the Canal. Proceeding on the main road from 
Pocklington, Helix cantiana var. albida was occasionally met with 
y seen ; 
every specimen belonged to the variety named. The gregarious 
propensities of /Ye/ix aspersa were strikingly shown on examination 
of an old dilapidated brick wall, where scores of this species were 
Ww 
Sheltered bank of a runnel, in company with attidula and 
ff. crystallina, and in close vicinity H. nitida was ecllecte n 
addition Avion ater, A. circumscriptus (an exceedingly dvenrled 
specimen), Zimax maximus var. fasciata, Agriolimax agrestis, Hyalinia 
alliaria, Helix rotundata, H. pulchella, H. nemoralis, H. hispida, 
H. caperata, H. virgata, and Cochlicopa lubrica occurred on the 
route. We had been looking forward to some excellent sport at the 
fishpond, but were doomed to disappointment, as there was no 
trace of water anywhere, the pond having been completely dried up. 
We then proceeded on a circuitous route to the canal, where we 
arrived late in the afternoon. Our time had almost elapsed, but the 
canal presented too many attractions to be easily ignored. A few cips 
of the scoops resulted in securing Planorbis albus, P. vortex, 
P. carinatus, Physa fontinalis, Limnea peregra, Bythinia ee 
Valvata cristata, Spherium corneum and Pisidium pusillu On 
the stone wall, at one of the bridges, Pupa muscorum odin and 
the banks of the canal were fairly productive of Succinea putris. 
A specimen of Vertigo pygmea was subsequently submitted to the 
section, which had been taken in the district the same day. _In the 
evening Messrs. Roebuck and Fierke joined a party on a ramble 
through the Park at Kildwick Percy, and in the lake there the 
valves of Anodonta cygnea were collected, as also a specimen of 
Limnea aurtculartia. he result of the day’s excursion was as 
follows :~-Terrestrial mollusca (including four slugs), 21; aquatic, 
II; total, 32 species. 
or the Entomological Section the only lepidopterist present was 
Mr. William Hewett, of York, who arrived on the scene as the 
other members were leaving, in order to have a night at ‘sugar.’ 
The butterflies which were seen by members during the day were 
the following, all of which were abundant along the lane-sides ; 
Lieris napi, P. rape, Vanessa urtice, V. atalanta, Lycena 
alexis, Polyommatus phleas, and Chortobius pamphilus. 
Mr. Hewett arrived at Pocklington at 5.30 in the evening, and 
in in company with Mr. W. Wox proceeded by way of Barmby to 
Mew 1894, 
