NEW AND RARE BRITISH SflDERS. 121 



WALCKENAERA INTERJECTA (Cambr.) 

 PI. A, fig. 6. 



Walckew'iera interjecta Cambr., Trans : Hertfordshire Nat : 

 Hist : Society 1888, vol. v., p. 18. 



Adult male, length ^th of an inch. 



Cephalothorax black-brown ; leys and palpi yellow ; digital joint 

 of palpus yellow-brown ; aMomen black. 



The cephalotliorax has the caput slightly elevated towards 

 the ocular region, very much like that of W. Beckii (Cambr.) The 

 hind-central pair of eyes are about an eye's diameter from each 

 other, and placed transversely at the fore-margin of the elevation ; 

 the hind-lateral eye (on each side) is more than a diameter's interval 

 from each hind-central eye on its side ; and there is a long and 

 slightly-curved tapering indentation running backwards from 

 between the hind-central and hind-lateral eyes on each side. .The 

 height of the clypeus is about equal to half that of the facial space. 



The digital joint of the palpus is large and has a small pointed 

 prominent lobe at the base on the inner side, and is largely and, 

 roundly prominent on the outer side. The palpal organs are rather 

 complex, and are furnished with three spines; one, slender, filiform 

 and of considerable length, issues from near their base on the outer 

 side, and coils freely round and over to the inner side, recurving 

 and ending in a very fine, free, hair-like point beneath its ex- 

 tremity ; another issnes from near the fore-end of the palpal organs, 

 and is circularly curved and sharp-pointed ; the third issxies from 

 near the base of the last, and is nearly straight, prominent, and 

 almost equal in size from its base to its sharp point. The radial 

 joint is short, about equal in length to the cubital ; it is broad, 

 obtuse, and, looked at from above and behind, somewhat semi-lunar 

 shaped ; its outer extremity is produced into a small, tapering, 

 sinuous, sharp-pointed spine, bent abruptly inwards just in front 

 of the anterior edge of the joint. Close beneath the base of this 

 spine is a very small thorn-like projection. 



The legs are moderate in length and strength, not very unequal 

 in length 4, 1, 2, 3, and furnished with hairs only. 



