ON NEW AND RARE BRITISH ARACHNIDA. 13! 



would furnish food for the spiders. The subject of insects 

 and, besides the spiders mentioned, various other species of 

 arachnids, dwelling in ants' nests is a very interesting one. 

 It has been closely worked at by Mr. H. Donisthorpe, to 

 whom I am indebted for many species of spiders he has 

 found in nests of several species of ants. The greater 

 majority of the spiders, however, found in ants' nests are 

 certainly, I think, simply there for purposes of warmth and 

 . shelter during winter, and are mostly immature. 



Lophoearenum stpamineum, Menge. PI. B., Figs. 51-53. 



Lophocarenum stramineum, Menge, Preuss, Spinn II., 

 p. 199, PI. XXXVIII., Fig. 96, and E. Simon 

 de Arachnides France, V. p. 678. 



Adult males of this spider were found on the Island of 

 Lambay, Ireland, in June and October, 1906, by Mr. Denis 

 Pack Beresford. Cf., " The Irish Naturalist," Vol. XVI., 

 p. 61-63, 1907. It had not before been recorded in Great 

 Britain or Ireland. 



Araeoneus erratus, sp. n. Pi. B., Fig. 54-56. 



Araeoncus vaporariorum, Cambr., F. O. P. Cambr. 

 Ann. and Mag. N.H., ser. 6, Vol. X., p. 395, 1892, 

 and cf., O. P. Cambridge, List of Brit, and Ir. 

 Spiders, p. 45, footnote.* 



As the type of the species, recorded I.e. supra, is now 

 in my possession, I am able to say that it is quite distinct 

 from Araeoncus vaporariorum, Cambr., of which last I also 

 have the type specimen. (For details see postea, p. 145.) 



Metopobaetrus prominulus, Cambr. 



Microneta territa, Cambr. Proc. Dors. N.H. and 

 A.F. Club, Vol. XXVIL, pp. 77 and 88, 1906, 

 PL A, Fig. 19-21. 



The researches of Dr. A. R. Jackson and Mr. W. 

 Falconer prove that the female spiders I had thought to be 



