445 



clothed with fine hairs. Immediately in front of tho spinners 

 is a transverse slit-like fold, which is probably the external 

 orifice of a spiracular organ. 



The female is rather larger, but resembles the male in colours 

 and general characteristics ; the ocular area, however, appears to 

 be a little flatter, and tho interval between the eyes of the hind- 

 central pair equal to, if not slightly greater, than that between 

 each and the hind-lateral eye next to it. 



Adults of both sexes of this little spidor wore found among 

 moss in a fir plantation at Bloxworth, in October, 1879. It is 

 closely allied to Walckenaera proecox, Cambr. (p. 143), but among 

 other slight differences, the cephalo-thorax of the latter 

 is distinctly broader in proportion to its length ; the hinder 

 slope is less steep, and its colour is of a clearer, brighter, 

 yellow-brown ; the height of the clypeus is also greater, being 

 more nearly equal to half that of the facial space, and tho 

 abdomen projects distinctly, though not greatly, over the base of 

 the cephalo-thorax. It is also nearly allied to Walckenaera 

 subitanea, Cambr. (p. 144), but the marks of distinction in that 

 spider from W. proecox (given p. 144) will serve to distinguish it 

 from the present species. It may also bo remarked that in W. 

 subitanea the abdomen projects very considerably and closely 

 over the thorax, almost covering its entire slope. The falces 

 also are stronger, and the indentations running back from the 

 hind-lateral oyes are quite straight. 



WALCKENAERA NUDIPALPIS. 



Erigone nudipalpis, Westr., Aran. Suec, p. 201. 



Walckenaera nudipalpis, Cambr., Trans. Linn. Soc. xxvii., p. 

 461. 



Length of the male rather more than 1 J lines, that of tho 

 femalo 2 lines. 



The colour of the cophalo-thorax of this fine species is a deep 

 rich black-brown. The caput is a little elevated, but has no 

 distinct ominonco. Tho hoight of tho clypeus (which projects 



