163 



also longitudinally and equally divided by a narrow but distinot 

 groove. A long, strong, longitudinal indentation runs back- 

 wards from immediately above and bokind each lateral pair of 

 eyes. 



The colour of the cephalo-thorax is dark yellowish-brown ; 

 that of the legs and palpi yellow ; and the abdomen is of a 

 sooty brownish-black hue. 



The palpi are slender ; the radial joint is shorter, but stronger 

 than the cubital, and its fore extremity is strongly emarginate, 

 forming three short, pointed prominences, two above and one 

 underneath. The palpal organs are prominent, but not very 

 complex ; at their extremity is a small, slender, curved, black 

 spine, near ■which is a prominent semi-transparent mass of 

 membranous substance. 



The eyes are very small ; those of the hind-central pair are 

 seated, not very far apart, in a transverse line on the upper sur- 

 face of the elevation of the caput, and are not easy to be soen, 

 except from above. 



Several examples were found in an old sewer, which had been 

 closed for thirty years and upwards, at Blox worth Eectory, in 

 October, 1872. I have also received it from the neighbourhood 

 of London, and from near Dunkeld in Sootland. 



WALCKENAERA PICINA. 



Walckenaera pioina, Blaekw., Spid. Great Brit, and Irel. p. 

 313, pi. xxi., fig. 228. 



The adult male is l-14th of an inch in length. 



The caput is moderately and distinctly elevated, being some- 

 what similar in form though higher than that of Walckenaera 

 pumila, Blaekw., and Walckenaera hiemalis, Wid. The fore slope 

 of the olevation follows that of the clypeus, which is consider- 

 ably prominent at its lower part. The eyes of the hind-central 

 pair are seated at the fore-part of the summit of the elevation, 

 and from behind and above each lateral pair a strong longitu-. 

 diual indentation runs backwards. 



