304 Yorkshire Naturalists at Stamford Bridge. 
Helicigona arbustorum taken by Dr. W. G. Fordham. AHy- 
grvomia hispida was not uncommon, and the still reaches of the 
river towards Aldby Bridge, yielded Bythinia tentaculata, 
Planorbis vortex, Pl. albus and abundance of young Spherium 
corneum, and Mr. Bellerby found a fine adult example of Helix 
hortensis var. lutea of the unusual band-formula 10345. Near 
the Lock a tree trunk turned over yielded no fewer than 
five different species of slugs, Limax arborum, Agriolimax 
agrestis, A. levis, A. intermedius, and A. circumscriptus. 
At Aldby Bridge the party crossed over into North East 
Yorkshire, and were guided by the head-keeper through Aldby 
Park and Buttercrambe Moor Woods. On this part of the 
route was found H. arbustorum. Mr. Greevz Fysher and Mr. 
A. Smith found abundance of Helicella cantiana, and Mr. R. 
Fowler Jones brought Avion ater var. plumbea and fine examples 
of A. subfuscus var. rufofusca. 
Mr. A. Smith has observed, on the North Riding side of the 
district, Hyalinia cellaria, Helix hortensis var. lutea 00000, 
and lutea 12345 arenicola, and H. nemoralis var. lbellula 
10345 and carnea 10345, all at Stamford Bridge ; H. nemoralis 
v. olivacea 00000 and 00300 (the band being the faintest trace) 
from the gamekeeper’s cottage on Buttercrambe Moor ; Hyalinia 
mitidula and H. crystallina on pieces of stick in Buttercrambe 
Moor Wood; Zonitoides nitidus common on the bottom of a 
dried-up pond at Strensall; and Limnea peregra from Strensall 
pond. 
Mr. Smith also noted that he had not particularly worked the 
ponds on Buttercrambe Moor except near the sides, where he 
has taken Limnea glabra and small Bythinia tentaculata.  L. 
peregra swarms in these ditches and Succinea putris is plentiful 
on the Great Water Plantain. Valvata cristata and Limnea 
truncatula are very common. 
On the roadsides about Stamford Bridge he has found Helix 
nemoralis, H. hortensis, H. aspersa, Helicella cantiana, Hy- 
gromia rufescens, H. hispida, Pyramidula rotundata, Vallonia 
pulchella, Ena obscura, Vitrina pellucida, Clausilia bidentata, 
Cochlicopa lubrica, Carychium minimum, etc. 
(To be continued). 
—:0:— 
Mr. W. G. Fearnsides, of Cambridge, has been appointed to the Sorby 
Chair of Geology, Sheffield. 
Mr. P. F. Kendall junior, Assistant Curator of the Zoological Museum 
of the University of Sheffield, has been appointed Lecturer in Zoology and 
Geo!ogy to the South-Eastern Agricultural College at Wye. 
We regret to record the death of Dr. P. L. Sclater, F.R.S., at the age 
of 84. He was elected secretary to the Zoological Society in 1859 and held 
the post till 1902. His zoological work was well-known, and he was one 
of the pioneers of the modern science of geographical distribution. 
Naturalist, 
