449 



tiuged with orange. The palpi aro short, and vory similar in 

 colour to tho legs, the radial and digital joints being brownish. 

 The radial and cubital joints are very short; the former is the 

 strongest, and produced at its fore extremity into a pointed 

 apophysis, with another shorter, sharper, and prominent one on 

 the outer side. The palpal organs aro moderately complex, and 

 have a fine filiform spine curvod in a circular form at their 

 extremity rather on the outer side. The abdomen is black. 



In the form of the caput there is some affinity to Walcken&era 

 humilis, Blaekw. (p. 150), but this part is smaller though more 

 elevated than in that species. A single example of tho male 

 was found at Newhaven, Sussox, On furze bushes when in bloom 

 in June, 1871, but originally I received the spocies from Bavaria. 

 Very lately — May 21, 1880 — I met with sevoral examples of the 

 adult male among heather on Bloxworth Heath. 



WALCKENAEltA JUCUNDISSIMA, Sp. n. 



Adult male, length 1 line ; that of the female being rather 

 greater. 



The cophalo-thorax of tho male of this very distinct species is 

 glossy, and of a deep blackish, olive-brown colour ; the caput is 

 rather elevated, and has a distinct, roundish, knob-like eminence 

 on tho summit of the fore part. When looked at in profile the 

 anterior face of the eminence is rather flatter or less prominent 

 than tho posterior, or occipital portion. The general form of the 

 caput is not unlike that of Walcken&era nudipalpis, with the 

 addition of the knob or eminence on its summit. 



The eyes are not vory unequal in size, those of tho hind-lateral 

 pair aro placed near together, but not quite contiguous to each 

 other, towards tho fore part of the summit of the cephalic knob ; 

 while those of the othor three pairs form a continuous, curved, or 

 somicircular row, the eyes of which aro contiguous to each other, 

 immediately below the knob. 



The legs are not very long (4.1.2.3), but moderately strong, 



