Yorkshire Naturalists at Knaresborough. 185 
Wood (3) to Plumpton Rocks (4) ; Monday, the left bank of 
the river between Knaresborough and the Nidd Viaduct (5), 
lack of time preventing any examination of the right bank ; 
Tuesday, Birk Crag, Harrogate (6). Along these routes, 
arachnids were not found to be at all plentiful ; April, of 
course, is too soon for most of them, and the Magnesian Lime- 
stone during the first part of the year apparently produces 
very little depth of ground covering suitable to their needs. 
Much of the material gathered consisted of immature species, 
several of which were, however, distinctive enough and suffi- 
ciently developed to be recognizable specifically. Only young 
examples of Tetragnatha solandrii Scop., and Linyphia peltata 
Wid., could be obtained by beating bushes and branches 
of trees, and collecting therefore was mainly confined to situa- 
tions on the ground. Messrs. King and Corbett each handed 
in an adult female of Coelotes atropos Walck. found beneath 
decaying bark. Only one spider of comparative rarity was 
met with, Styloctetor penicillatus Westr., ^'s, which is now 
known to be less infrequent and more widely distributed 
than was once Supposed. A small black species which con- 
ceals itself beneath the bark of trees, it escapes observation, 
unless specially looked for, except during the mating season, 
when the males roam openly over the trunks in search of the 
females. Three spiders, Lophomma subaequale Westr., $?, a 
rare British species, Tapinopa longidens Wid. $’s, and Philo - 
dromus dispar Walck, $, a rare Yorkshire species, which I 
took at Knaresborough in 1906, were not met with on this oc- 
casion, but are added to the general list given in extenso below, 
making a total for the district of 56 different kinds. Three 
species of harvestmen and one false scorpion were also taken. 
The numbers have reference to the localities enumerated 
above : — 
Spiders. 
Harpactes hombergii Scop. 1. 
Oonops pulcher Tempi. 1, 2, 3, 5. 
Clubiona tevrestris Westr. 3, 1. 
C. reclusa Camb. Imm., 3, 5. 
Dictyna uncinata Westr. Imm., 2. 
Amaurobius similis Bl. Outhouse. 
A. fenestralis Stroem. 1, 2, 3, 5. 
Cryphoeca silvicola C. L. Koch., 9, 
3. $, 5- 
Coelotes atropos Walck. 5. 
Tegenaria derhamii Scop.. Out- 
house. 
Theridion pallens Bl. 2, 3, 5. 
Tapinopa longidens Wid. 9 s , *• 
Stemonyphantes lineata Linn. 1, 2, 
3, 5- 
Linyphia montana Clerck. Imm. 
and ad. <3, 3, 5. 
L. peltata Wid. Imm. 3, 4, 5. 
L. hovtensis Sund. ad. gs. Imm. 
?, 1, 5- 
L. clathrata Sund. 1, 2, 3, 5. 
Leptyphantes terricola C. L. Koch, 
5- 
1 . zimmermannii Bertk. 9 s -, b 3- 
L. tenuis Bl. qS, 5. 
L. ericaeus Bl. 5, 6. 
Poeciloneta globosa Wid. Imm. 2. 
Bathyphantes concolor Wid. 1,3,5. 
B. nigrinus Westr. 3, 5. 
B. gracilis Bl. 3. 
B. dorsalis Wid. Imm. 2, 3, 5. 
Mucrargus rufus Wid. 9, 5- 
Microneta viaria Bl. 3. 
Micryphantes rurestris C. L. K. q, 
5- 
1914 June 1, 
M 
