of the palpi between the tips and the apical claws of the cheli- 

 ceres, parting the cheliceres at the same time ; and then closing 

 all, draws them out again to repeat the process indefinitely. 



The specimens found by me in September, are of four sizes 

 — the full-grown, the medium sized, the small ones and those 

 just hatched. The sizes of the holes correspond. The differ- 

 ence however between the two larger sizes is not great, nor is 

 that between the two smaller, and in either case they run to- 

 gether to a certain extent ; it seems probable therefore that the 

 spider is double-brooded and hibernates quite young and when 

 nearly mature. 



This spider has been referred to the genus Lycosa, though it 

 differs from it in the greater length of the lowest row of eyes, 

 resembling in this respect a Pirata. The species of the latter 

 group, however, have very different habits, being found by the 

 borders of ponds and running over the surface of the water. 



A description of the species, which appears to be new, is 

 appended. 



Lycosa arenicola nov. sp. Cephalothorax high and square- 

 ly appressed in front, pretty strongly compressed anteriorly, 

 though convex on the sides, being three quarters as high 

 as broad ; posterior half expanded and depressed, sloping from 

 the centre regularly and rapidly in every direction except in 

 front, and leaving the hind border regularly rounded ; the 

 whole blackish castaneous, castaneous in a longitudinal median 

 band, which is broad on the anterior and narrow on the poste- 

 rior half, smooth, and covered, but not profusely, with short, 

 delicate, silky, recumbent, gray hairs, mingled with coarser and 

 fulvous hairs on the very face and around the eyes ; the ante- 

 rior half, and especially the crown, with long, black, curving, 

 slender, erect bristles, directed forward and rather sparsely 

 scattered over the surface, least abundant and shortest on 

 the lower half of the sides. Sternum nigro-castaneous with 

 long, distant, erect, black, bristly hairs. Lowest series of eyes 

 of equal length with the middle series, the middle eyes of the 

 lowest series slightly larger than the outer ones, not more than 

 half the diameter of those of the middle or upper series ; eyes of 

 lowest series midway between the lower margin of the cephalo- 



