598 



fore-tibiso, and palpi with the reddish-orange legs and tlv>r ;x is 

 very strong and characteristic. 



GENUS LYCOSA. 



LYCOSA AGKICOLA. 



Lyoosa aoricola, Thar., Syn. Eur. Spid. p. 278, and Cambr., 

 Ann. and Mag. N. H., ser. 4., vol. 16, p. 

 255. 

 „ flttviatilis, JBL, Spid. Great Brit, and Irel., p. 31, pi. 

 ii., fig. 13. 



In size, form, and general structure this spider is very closely 

 allied to Lycosa arenicola, Cambr. (p. 373), but may be dis- 

 tinguished by its, usually, more uniformly hoary -grey hue, as well 

 as by the central longitudinal pale band on the cephalo-thorax 

 being distinctly dilated behind the eyes. In females this dilation 

 appears to be constant, and, with rare exceptions, it is so also in 

 the males. In the present spider the legs are always more or less 

 distinctly annulated, especially in the females ; a character I 

 have not observed in any one of a large number of examples of 

 Lycosa arenicola. Those very tangible and distinctive characters 

 will suffice to separate the two species. There are, however, 

 differences (but not so easily observed) in the structure of the 

 palpal organs. 



Lycosa ayricola occurs abundantly in North Wales, the lake 

 district of England, and also in Scotland, chiefly among stones 

 and fragments of rock on the banks of rivers and in the dried 

 up beds of streams. 



The above description was accidentally omitted in Appendix B. 



