388 Rev. F. O. Pickard-Cambriclge on 



Posterior row of eyes curved ; centrals four diameters apart, 

 placed on anterior apex of lobe (PI. XX. tig. 1, h). 



Anterior row curved ; centrals much smaller, one diameter 

 apart, two and a half diameters from laterals. 



Palpus. — Cubital joint three times as long as its widest 

 diameter. Radial joint two thirds the length of cubital, 

 produced in front over base of digital joint into a long, 

 tapering, straight spur, its apex slightly and abruptly hooked ; 

 its outer side set with a fringe of curving hairs. Palpal 

 organs exhibiting at base on outer side beneath, a small 

 liooked process, and at their apex a straight sharp spur, and 

 adjacent to this a stout, spiraliform, curving, dark black 

 spine. Digital joint slightly prominent on upperside at 

 base (Ph XX. fig. 1, c, 1,2, 3). 



Female sex. — Cajjut convex, thoracic dorsal outline con- 

 cave in central region, convex behind, dropping abruptly 

 towards the pedicle. 



Posterior roio of eyes curved, anterior margin of centrals 

 in a line with posterior margin of laterals. Eyes equal ; 

 centrals one and a quarter diameter apart, one and a half 

 diameter from laterals. 



Anterior roio curved ; anterior margin of centrals in a line 

 with the centre of laterals ; centrals much smaller^ half a 

 diameter apart, one diameter from laterals. 



Eingyne simple, presenting a transverse tongue-like central 

 process, broader than long, bearing anteriorly on either side a 

 small, circular, dark concavity ; its posterior margin very 

 slightly sinuous (Ph XX. fig. 1, d). 



Palpus bearing some stout spines ; without terminal tarsal 

 claw. 



This very small but interesting species has been met loith by 

 M. Simon on the continent, but has never before been taken in 

 the British Islands. 



The male icill be at once recognized by the large, globular, 

 cephalic lobe and the radial joint of the palpus, and will not 

 be mistaken for nemoralis, Bl., Blackwallii, Gb., belonging to 

 the same genus. 



It might be confounded with Peponocranium ( Walckenaera) 

 ludicrum, Bl. But if it be noted that this latter species has 

 long sjnnes on the legs, that its integuments are not impunctate, 

 and that the male has no abdominal dorsal scutum, there will 

 be no confusion of the two spiders in either sex. 



A dozen specimens loere taken by myself in July 1891 on a 

 swampy island in the middle of the Elterwater, near Ambleside^ 

 in the English Lake districts. 



