70 ON BRITISH ARACHNID A. 



Falces strong, straight, and directed a little backwards, 

 colour yellow-brown. 



Abdomen dark brown, of a regular oval form, and thinly 

 clothed with fine hairs. The genital aperture is very charac- 

 teristic in size and form. 



Though somewhat obscure, I believe this spider to be of 

 the genus Araeoncus, Sim., and have conjectured that it 

 might possibly be the female of A. longiusculus, Cambr.. 

 of which I formerly described the male from Corsica, but have 

 never as yet seen an authentic female. Meanwhile, it is 

 certainly, I think, distinct from any of our British species, 

 and on the whole it is perhaps safer to describe it as new rather 

 than to relegate it to an already described species without a 

 type of the latter with which to compare it. 



A single example was sent to me in April, 1909, from Rams' 

 Head, Cornwall, where it was found in a nest of the ant Tetra- 

 morum ccespitum by Mr. H. Donisthorpe. 



CORRECTION OF A FORMER PAPER. 



The following corrections should be made of one or two 

 mistakes in the paper on " British Arachiiida " (Proc. Dors. 

 Nat. Hist, and Antiq. Field Club, Vol. XXX., p. 97, 1909). 



Page 104, under heading of Mengea Warburtonii, Camb., 

 instead of " by Mr. W. Falconer," read " and has been received 

 by," etc. 



Page 106, under heading Erigone arclica, White-Cambr., 

 instead of Sunderland, read North Sunderland. 



Page 107, under heading Cornicularia valida, Jackson, line 9, 

 from top of page for " longer " read " larger." 



Page 113, under heading Hyctia Nivoyi, Lucas, for " Saltend 

 Common, near Hull," read " Spurn ;" and instead of " Mr. W. 

 Falconer has met with it here," read Mr. W. F. " has not 

 himself met with it," etc., etc. 



