Arachnida 195 



without any waist and that it shows distinct traces of 

 segmentation. There are, of course, many other points of 

 difference, and it may be mentioned that a phalangid always 

 has two eyes only, whereas the normal allowance for a spider 

 is eight. Moreover phalangids do not spin webs. They are 

 found on walls, under stones, and among grass and herbage, 

 and are predaceous animals. Twenty-four species are British, 

 belonging to nine genera. Of these, four genera and eight 

 species have been recorded in Cambridgeshire. They are given 

 below : 



Phalangium opilio, Linnaeus. 



Phalangium parietlnum, De Geer. 



Phalangium saxatile, C. L. Koch. 



These are fairly large species, with moderately long legs, 

 found on walls and under stones. 



Liobunum rotundum, Latreille, the species with small dark 

 body and immoderately long legs, found on walls or 

 running among herbage. 



Nemastoma lugubre, Miiller. A short-legged species, black, 

 with two white spots, common in swampy places among 

 grass. 



Oligolophus morio, Fabricius. 



Oligolophus ephippiatus, C. L. Koch. 



Oligolophus spinosus, Bosc. 



These species have a large body, and moderately long and 

 rather strong legs. They are found under stones and among 

 herbage. 



(3) Of all the Arachnida the spiders are far the most 

 interesting in their habits, popular prejudice notwithstanding, 

 and anyone who undertakes the study of these creatures is 

 sure to find it fascinating. They present a very great variety 

 in their mode of life. The spinners of the circular snare are 

 familiar objects enough, and so are the less attractive sheet- 

 web weavers of cellars and out-houses, but the wolf-spiders 

 which hunt their prey through the herbage the mothers with 

 the newly-hatched young on their backs and the jumping 



132 



