98 Mr Warburton, On spiders near Cambridge. [Nov. 10, 



Near its roof a small sheet is then formed, and the eggs are 

 laid upwards against it and are covered with silk. A box is then 

 constructed with this sheet as its roof, and is firmly attached by 

 its angles to the roof and floor of the chamber. This box is con- 

 structed and jealously guarded even if the eggs are removed imme- 

 diately on oviposition. 



The whole operation involves about thirty-six hours of almost 

 incessant industry. 



(5) Supplementary list of spiders taken in the neighbourhood 

 of Cambridge. By 0. Warburton, B.A., Christ's College. 



[Received November 14, 1890.] 



In Vol. VI. of these Proceedings a list was given of some hun- 

 dred species of local Aranese. To these must now be added the 

 following, some of which have been taken since the former publi- 

 cation, while others are inserted on the authority of the Rev. 

 O. Pickard-Cambridge, who has kindly furnished a list of Spiders 

 sent to him some years ago by the late Mr Farren. 



Unfortunately Mr Farren did not record the exact locality nor 

 the frequency of his captures, but he is known to have carefully 

 searched Wicken Fen, which is probably the habitat of most of his 

 species. 



DYSDERIDAE. 

 Dysdera 



crocota, C. L. Koch, rare, Castle Hill. 

 Segesteia 



senoculata, Linn. 



DRASSIDAE. 



Dkassus 



troglodytes, C. L. Koch, rare, Wicken Fen. 

 blackwallii, Thor. 



Clubiona 



corticalis, Walck., rare, University bathing enclosure. 



reclusa, Cambr. 

 Anyphaena 



accentuata, Walck. 

 Phktjkolithus 



festivus, C. L. Koch, Fleam Dyke. 



DICTYNIDAE. 



DlCTYNA 



latens, Fabr. 



AGELENIDAE. 

 Hahnia 



nava, Bl., rare, Wicken Fen. 

 Lethia 



humilis, Bl. 



