386 Rev. F. O. Pickard-Cambridge on 



exhibiting at their base, rather beneath the radial joint, a short, 

 curved, dark spur (the homologue of the falciform process) 

 (PI. XX. fig. 5, F (b)) ; bearing at their apex a spiraliforin 

 membrane supported on a fine black spiral spine (PI. XX. 

 fig.5,F(c)). 



Female. — Falces convex at base in front^ vertical, scarcely 

 attenuate or divergent at apex ; upper margin of fang-groove 

 bearing five sharp teeth, lower margin with three small 

 granulations. 



Palpus spinose, without terminal tarsal claw (PI. XX. 

 fig. 5, A). 



Epigyne not much developed externally, presenting more 

 or less conspicuously a pair of spermathecgs (PI. XX. 

 fig. 5, C) and two pairs of dark, sinuous, tubular ducts. 



This very distinct little spider is closely allied to Tm. denti- 

 chelis, Sim.^ and Tm. longisetosus, Etnt.^ but evidently quite 

 different from either. 



Sixty to eighty specimens were taken by myself upon the 

 damp walls of a brewery cellar at Cannock, Staffordshire , in 

 May 1891. The females constructed a small, roundt^d, fat- 

 tened, pure white egg-cocoon in proximity with the delicate 

 silken sheet forming the snare. 



Cannock, Staffordshire. 



Leptyphantes plumiger, sp. n. (PI. XX. fig. 2.) 



Male I line. 



Cephalothorax divWyoWow-hxown, horizontal above, abruptly 

 depressed behind. 



Eyes oi posterior row large, situated in a straight line; 

 centrals scarcely one diameter apart, half a diameter from the 

 laterals. Anterior row straight ; centrals much smaller, 

 almost in contact, one quarter a diameter from the laterals. 



Clypeus scarcely as higli as the ocular area. 



Falces short, stout, straight ; upper margin of fang-groove 

 furnished with two very small teeth. 



Legs short, rather stout, clothed witli fine hairs. Femora 

 without spines ; with a fringe of longer hairs beneath. 

 Genual joints with a short fine spine at apex. Tibias with 

 two fine erect spines, scarcely longer than the diameter of 

 the joint. Metatarsi i. and ii. with one fine spine on the 

 upperside near the base. 



Abdomen dull sooty brown. 



Palpi and palpal organs, vide PI. XX. fig. 2. 



This very small and obscure spider belongs to that little 



