1 86 
Yorkshire Naturalists at Knaresborough. 
Maso sitndevallli Westr. 3. q , 
4- 
QLdothorax retusus Westr. $s., 3. 
OE. agrestis Bl. q, $, 5. 
Tiso vagans Bl. $, 2. q, 5. 
Erigone atra Bl. 5. 
Lophomma subaequale Westr. 9, 5. 
Dicymbium nigrum Bl. 2, 3. 
Neriene rubens Bl. 3, 6. 
Dismodicus bifrons Bl. Imm. 3, 
5- 
Diplocephalus crista t us Bl. 2s, 5. 
D. latifrons Camb. 3, 5. 
D. fuscipes Bl. 3, 6. 
Peponocranium ludicrum Camb. 
$s, 4- 
Styloctetor penicillatus Westr. 3. 
Walckenaera acuminata Bl. $, 2. 
Cornicularia cuspidata Bl. Q. 5. 
Ceratinella brevipes Wid. 6. 
Pro fur cat a Vill. Imm. 2. 
Tetragnatha solandrii Scop. Imm. 
1. 2, 3, 4. 5. 
Pachygnatha degeerii Sund. 1, 2, 
3, 5- 
P. clerckii Sund. 3. 
Meta segmentata Clerck ad (Js. 
Imm. $s, 3, 5. 
M. merianae Scop. Imm. 3. 
Xysticus crist at us Clerk. Imm. 
5 . 6 . 
Philodromus dispar Walck. 9> 3- 
j P. (?) aureolus Clerck. Imm. 2. 
Lycosa amentata Clerck. Imm. 2,5. 
Harvestmen. 
Platybunus corniger Herm. Imm. Megabunas insignis Meade. 3. 
winter form triangularis Herbt. Nemastoma lugubre F. Mull. 2, 3, 
1, 2, 3, 4, 5. 5- 
Pseudoscorpion. 
Obisium muscorum Leach, 3, 5. 
Geology. — Mr. T. Sheppard reported that the work of 
the members of the geological section must not be judged by 
the weight of their knapsacks. From a collector’s paint of 
view, perhaps, the Knaresborough area was not an ideal one. 
But fortunately his party was able to keep well occupied 
without much manual exertion, though one member at any 
rate suffered temporary partial disablement in his anxiety to 
find out * how the earth was made.’ The foundation-stone of 
the district proved to be the coarse sandstones of the Millstone 
Grit series ; and in one or two localities, as at Plumpton 
Rocks and even in the stone forming the walls and bridges, 
were thin beds containing pebbles — some of fairly large di- 
mensions — a thorough examination of which would doubtless 
assist in solving the problem as to the origin of the material 
forming the grits. Sorby, many years ago devoted some at- 
tention to this question — and more recently it is being followed 
up by Mr. Gilligan. 
At one time the grits formed the land surface in the dis- 
trict now known as Knaresborough, and in one or two places, 
notably at Grimbald’s Crag, the old undulating landscape can 
be distinctly seen beneath the covering of Magnesian limestone. 
This Permian stratum rests completely upon and covers up the 
older rocks and is again in turn covered up by the drift of the 
Glacial period. But a great break in the geological history of 
the district has occurred between the deposition of the grits 
and the limestone which immediately overlies it ; just as a 
Naturalist, 
