166 



with an outward direction. The palpal organs are prominent, 

 moderately complex, and have a circularly curved, filiform, 

 black spine at their extremity. These organs, with the digital 

 joint, form a roundish mass, larger than those of Walckenaera 

 picina, Bl., and Walckenaera Beclcii, Cambr. 



Found among moss in woods, and occasionally on the walls of 

 the Rectory at Bloxworth, but it is a rare spider. 



The types of Walckenaera lorealis wero found on the Pentland 

 Hills, in Scotland, and their identity with Westring's Swedish 

 spider (Erigone erythropusj is undoubted. 



WALCKENAERA TKIPRONS. 



Walckenaera trifrons, Camlr., Zoologist 1863, p. 8589. 



Adult male length 1-1 lth of an inch. 



Thisspecies may be recognised, at a glance, by the comparatively 

 small size but great distinctness of the elevation on the caput. 

 The fore part of the caput is large, rounded and promin- 

 ent, and the eminence standing up with a somewhat forward 

 direction and placed towards the occiput, has a rather tuberculi- 

 form- appearance ; the height of the elevation is moderate ; on 

 its sides, behind each lateral pair of eyes, is a deep longitudinal 

 somewhat oval-shaped indentation. In its general form and 

 character the elevation is not much unlike that of most of the 

 foregoing species. When looked at in profile there is a deep 

 cleft or indentation between the summit of the elevation and the 

 beginning of the clypeus. 



The colour of the cephalo-thorax is a shining dark black-brown, 

 that of the legs and palpi bright orange-yellow, and the abdomen 

 jet blaok. 



The radial joint of the palpus is much shorter than the cubital, 

 and has two apophyses at its fore extremity ; one on the outer 

 side broad, obtuse, and concave, with a red-brown corneous pro- 

 cess issuing from its concavity ; the other, towards the inner side, 

 longer, but much slenderer, slightly curved, apparently bifid at 

 its extremity, and directed obliquely outwards over the base of 



