and rare British Spiders. 253 



Genus Xysticus, C. Koch. 

 Xysticus viaticus. 



Xi/sticus viaticus, C. Koch, Die Arachn. xii. p. 70, pi. 412. fig. 1003. 

 X. Kochii, Thorell, Europ. Spid. p. 185, and Syn. Europ. Spid. p. 241 . 

 Thomisus viaticus, Cambr. Linn. Trans, xxviii. p. 528. 



Adults of both sexes were found rather frequently among 

 short herbage and on bare spots in different parts of the 

 Island of Portland at the beginning of June 1875. Although 

 I had previously met with this spider, it had been hitherto 

 mixed up with Xysticus cristatus ; it. was not, therefore, until 

 the occasion above referred to that I detected the species at 

 the time of capture, and am consequently able to fix a locality 

 for it with any certainty. 



Genus Lycosa, Latr. (Lycosa, Blackw. ad partem). 



Lycosa aremcola, sp. n. PI. VIII. fig. 9. 



Adult male, length 3 lines ; adult female, 3| lines. 



This spider is nearly allied to L. fluviatilis, Bl. (L. are- 

 naria, Koch), both in size and general appearance, but may 

 be distinguished by the absence of dilatation behind the eyes 

 in the central pale band on the cephalothorax, as well as by 

 the legs being apparently always free from dark annulations ; 

 none at least were visible on the legs of thirty-five examples 

 of both sexes ; the characteristic corneous process, springing 

 from the middle of the palpal organs, is also of rather a dif- 

 ferent form, a little longer, and of a rugulose appearance ; the 

 whole of the palpal organs are of a darker as well as rougher 

 and coarser character. 



The cephalothorax is of a deep black-brown colour, with 

 three longitudinal narrow yellowish bands ; each lateral one 

 is removed from the margin by at least its own width, and 

 divided transversely, by sometimes no more than dark lines, 

 into three elongate patches of different sizes ; sometimes, 

 however, the dividing lines form more extended dark patches; 

 the central band is narrow, and extends from nearly about half- 

 way down the hinder slope to sometimes the middle of the 

 ocular area, where it fines off into a mere line clothed with 

 pale greyish yellow hairs ; both the upper and lower edges of 

 the lateral bands are jagged; the central band is thus broadest 

 at the thoracic junction, and fines off thence to a point both 

 before and behind. 



The legs are long ; their relative length 4, 1,2, 3 ; they are 

 of a dull yellowish colour ; the tarsi of those of the first pair 



Ann. & Mag. N. Hist. Ser. 4. Vol. xvi. 18 



