A HISTORY OF BUCKINGHAMSHIRE 



pair of spinners are set close together at the base, and the maxillae are convex, and not 

 impressed in the middle. 



2. Micaria pulicaria (Sundevall) 5. Zora maculata (Blackwall) 



Colmbrook (Webb) Burnham Beeches (Webb) 



2. Clubiona pallldula (Clerck) / .. tr ,, , \ 



v 6. Micrommata vtrescens (Clerck) 



Chipping Wycombe (F. P. S.) /Q ,, p . 

 4. Clubiona corticalis (Walckenaer) 

 Colmbrook (Webb) 



Spiders with eight eyes, situated in two transverse rows, two tarsal claws and anterior 

 spinners close together at their base. Maxillae not impressed. The crab-like shape and side- 

 long movements of these spiders are their chief characteristics, enabling them to be easily 

 distinguished from the more elongate Drassida and Clublomdts. 



7. Philodromuf dispar, Walckenaer 



Colmbrook (Webb) 



SALTICID^E 



The spiders of this family may be recognized in a general way by their mode of pro- 

 gression, consisting of a series of leaps. More particularly they may be known by the square 

 shape of the cephalic region and the fact that the eyes are arranged in three rows of 4, 2, 2, 

 the centrals of the anterior row being much the largest. Otherwise the spiders are simply 

 specialized Clubionids with two tarsal claws and other minor characters possessed in common 

 with other members of this family. 



8. Marpissa muscosa (Clerck) 



Colmbrook (Webb) 



PISAURIDJE 



Spiders with eight eyes in three rows, and three tarsal claws. The first row of eyes 

 consists of four small eyes which are sometimes in a straight line, sometimes recurved and 

 sometimes procurved. Those of the other two rows are situated in a rectangle of various 

 proportions. Pisaura runs freely over the herbage, carrying its egg-sac beneath the body. 



9. Pisaura mirabilis (Clerck) 



Colmbrook (Webb) ; Chipping Wycombe (F. P. S.) 



Very common ; adult in June and July. Known also as Dolomedes or Ocyale mirabilis. 



LYCOSIDjE 



The members of this family have also eight eyes, similarly situated to those of the 

 Pisauridtg, the tarsal claws also being three in number. The spiders are to be found running 

 freely and carrying their egg-sac attached to the spinners. Many of the larger species make 

 a short burrow in the soil and there keep guard over the egg-sac. 



10. Lycosa ruricola (De Geer) 13. Pardosa lugubris (Walckenaer) 

 Chipping Wycombe (F. P. S.) Burnham Beeches (Webb) 



11. Lycosa pulverulenta (Clerck) ^ p [rata hygro p hi i us Thorell 

 Colmbrook (Webb) , Q p ' 



12. Pardosa pullata (Clerck) 

 Colmbrook (Webb) 



AGELENID^E 



Spiders with eight eyes, situated in two transverse rows. Legs with three tarsal claws. 

 The species of this family spin a large sheet-like web, and construct a tubular retreat at the 

 back of it, which leads to some crevice amongst the rocks or the herbage or the chinks in the 



108 



