128 ON NEW AND RARE BRITISH ARACHNIDS. 



A very distinct species new to science found by Dr. 

 Jackson in June, 1912, in Sherwood Forest, running on 

 the trunks of oak trees. A minute description is given, 

 I.e. supra, by Dr. Jackson. 



Leptyphantes Black wallii, Kulcz. 



Leptyphantes Blackwallii, Kulcz. ; Cambr. Proc. 



Dors. F. Club, Vol. XVI., p. 112. 

 An almost black variety of the female of this spider 

 was taken by my son A. E. LI. P.-C. at Blox worth in 

 August, 1913. 



Leptyphantes cacuminum, Jackson. 



Leptyphantes cacuminum, A. R. Jackson. Proc. 

 Roy. Phys. Soc., Edinburgh, vol. XIX., No. 5, 

 p. 118, pi. II., figs. 16. 



Adults of both sexes were found by Dr. Jackson on 

 Ben Nevis in July, 1913. It appears to be a very distinct 

 species, and not to have been described or recorded 

 before. 



Length of the male 1-75 m.m., and of female 1-8 to 

 rOm.m. 



Bathyphantes parvulus, Westr. 



Linyphia parvula, Westr. ; Cambr. Spid. Dors., 



p. 210. 



An adult male was taken by A. E. LI. P.-C. at Blox- 

 worth in August, 1913. 



Opistoxys subacuta, Cambr. PL A., figs. 19, 20. 



Opistoxys subacuta, Cambr., Proc. Dors. F. Club, 



1891, Vol. XII., p. 91, fig. 3. 

 Leptyphantes patens, Cambr. I.e. Vol. XXVIII., 

 1907, pp. 128, 139, pi. A., figs. 20, 25 (male, 

 not the female). 



Opistoxys subacuta having been insufficiently figured 

 (I.e. supra), I have added here some figures of the palpal 



