201 
THE SPIDERS OF WICKEN, WITH DESCRIPTION 
OF TWO NEW SPECIES. 
WM. FALCONER, 
Slaithwaite, Huddersfield. 
In a paper published in The Naturalist for October, 1912, 
pp. 310-324, I recorded 107 species of spiders for Wicken, the 
famous naturalists’ resort in Cambridgeshire. For the purpose 
of continuing the investigation of the fen and its vicinity, I 
have since paid the district two more extended visits, viz., 
from July 25th to August Ist, 1913, and from May 3oth to 
June 6th, 1914. On both occasions favourable weather 
conditions were experienced, but on the other hand the great 
luxuriance of plant growths was found to be a decided hindrance 
to successful collecting, at least as regards spiders. Most of 
the rarities of the fen again occurred, amongst them being 
Mengea warburtonit Camb., which does not seem to have been 
noticed here, or has been unrecorded, since 1894, and the 
black variety of Crustulina sticta Camb., (I 9), which has been 
reported from various places in the South of England. At the 
Sycamores in the village further examples of Scotopheus 
blackwallu Thor., Steatoda bipunctata Linn., Leptyphantes 
minutus Bl., Evo furcata Vill., Philodromus dispar Walck., 
and in the fen, Theridion pallens Bl., Leptyphantes tenuis B1., 
Bolyphantes concolor Wid., Porrhomma microphthalmum Camb., 
Dicymbhium nigrum Bl., and Walckenaera nudipalpis Westr., 
were taken. Marpessa pomatia Walck. was again abundant, 
and in July the females were spun up in the heads of the reeds 
with their newly hatched young. Further examples of Zora 
letifera Falcr., were found to have the ocular pubescence, 
(evidently more fugacious in this species), which was said in 
the original description, Joc. cit. pp. 319-20, to be wanting. 
Altogether 112 different species were obtained, of which 
30, although a good proportion of them are by no means rare, 
or restricted in distribution, do not appear to have been 
previously recorded for the locality. Of the more noteworthy 
ones, two, Centromerus incultus and Mayo sublestus, are new 
to science, and are interesting additions to the number of 
endemic species which are already known to inhabit. the fen. 
Not included in any of the above totals are 4 others, which 
are stated to have been obtained in the fen at various times, 
but were not entered in my first list, because, in one instance, 
I was not aware of its present identity, and in the others, 
doubtful of the value to be attached to them. They are now 
inserted, with the necessary particulars, in their proper places, 
bringing the total for the district up to 141, a number which 
certainly does not yet exhaust the possibilities of the fen, for 
1915 June 1. 
