505 



WALCKENAERA SOBDIDATA. 



EiuaoNE sobdidata, Thorell, Syn. Eur. Spid., p. 452. 

 Walckenaeba atba, Blackw., I.e., p. 300, pi. xxi., fig. 215. 



Length of the female l-14th of an inch. Male rather smaller. 



Cephalo-thorax black ; caput of the male, prominent but 

 obtuse, with an oblong indentatian on each side extending back- 

 wards from each lateral pair of eyes. 



Legs and palpi brown. Cubital and radial joints of the male 

 palpus short ; radial much the strongest ; digital joint oval ; 

 palpal organs highly developed, complex, with a long, black, 

 very prominent, curved filiform spine enveloped in membrane » 

 originating about the middle of the outer side, and a short, 

 straight, pointed one at their extremity. 



Abdomen black. 



Found under stones, North "Wales, in May. fl have not seen 

 this spider.] 



WALCKENAERA PARVA. 



"Walckenaeba pabva, Blackw., I.e., p. 304, pi. xxi., fig. 219. 



Length of the male about 1-1 8th of an inch; female 1-1 6th. 



Cephalo-thorax brown. Caput of the male very convex behind 

 the eyes, and with a longitudinal indentation immediately behind 

 each lateral pair. Legs brown ; palpi similar in colour ; radial 

 joint rather shorter and stronger than the cubital, and with an 

 acute prominent apophysis at its extremity in front. Palpal 

 organs not complex, but somewhat prominent. 



Abdomen dark brown-black. 



Found in numbers on railings, North Wales, in the months of 

 December and January. [I have not seen this spider.] 



WALCKENAERA TURGIDA. 



Walckenaeba tubgida, Blackw., I.e., p. 299, pi. xx., fig. 214. 

 Length of the female 1-1 3th of an inch. Male rather smaller. 



