Falconer : The Spiders of Wicken, Cambridge. 311 



Westr. Two others, Zora letifera and Neon valentulus, are 

 new to science, and a third, Maso gallica Sim., new to Britain. 

 We failed to obtain seven species already recorded, viz., 

 Drassus pubescens Thor., Theridion blackwallii Camb., Lepty- 

 phantes minutiis BL, Phanlothrix hardii Bl., Mengea warbur- 

 tonii Camb., Baryphyma pratensis Bl., and Evarcha arciiata 

 Clerck., but they have been added to the following list making 

 a total of 107 species. These, with the exceptions noted in 

 loco, V ere taken in the fen itself, either by sweeping or beating 

 the vegetation, shaking the thick tufts of grass and sedge, or 

 sifting the vegetable debris on the ground and the heaps of cut 

 herbage w^hich lie undisturbed for months together and become 

 the chosen refuge of a multitude of all kinds of creatures. 

 Individual spiders of the larger kinds have learnt to ascend the 

 lepidopterists' artificial posts to prey upon the moths attracted 

 by the sugar. Examples of Epeira cornuta Clerck., two males, 

 Chibiona holosericea Degeer., two females, Tibellus maritimus 

 Menge., one female, and Xysticus ulmi Hahn., one female, were 

 so found one evening, when I accompanied Mr. B. Williams 

 of London, on his round. 



My best thanks are due to Dr. Jackson for so generously 

 allowing me the use of his material and notes, and to the Rev. 

 O. Pickard Cambridge, and Mons. E. Simon, to whom one or 

 two of the more critical species were submitted. 



Where no initials occur in the following list, it is to be 

 understood that the species was obtained both by Dr. Jackson 

 and myself. For convenience also I have named the lepidop- 

 terists' drove the Drove, and the grassy road bordered on 

 both sides with trees which runs alongside the fen, the Drive. 



ARANEAE. 



Harpactes hombergii Scop. Three females from ivy covered 

 gateposts in the Drive, W. F. 



Drassus pubescens Thor. Proc. Dorset Field Club, Vol. 

 xxvi, 1905, p. 42, Mr. F. P. Smith. A widely distributed but 

 infrequent spider. 



ScotophcBiis blackwallii Thor. An adult female from 

 stables in the village, A. R. J. ; another from a wall in the 

 village, handed to me by Mr. Stallman, of London. 



Prosthesima latreillei C. L. Koch. An adult female, A. R. J. ; 

 an immature female from heap of cut herbage in the Drove. 

 W.F. Neither this species nor 5. blackwallii are common, 

 although widely distributed. 



Micaria pulicaria Sund. One adult male with the last 

 named. W.F. 



Clubiona grisea, L. Koch, both sexes, not uncommon. 



C. lutescens Westr. Both sexes from the fen and ivy cov- 

 ered gateposts in the Drive. 



•1912 Oct. I. 



