SPIDERS 
THOMISID 
Spiders with eight eyes, situated in two transverse rows, two tarsal claws and anterior 
spinners close together at their base. Maxillz 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 Drasside and Clubionide. 
4. Xysticus cristatus (Clerck) 6. Tibellus oblongus (Walckenaer) 
Luton (F.P.S.). Luton (F.P.S.) 
5. Philodromus aureolus (Clerck) 
Luton (F.P.S.) 
ATTIDA 
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. 
7. Salticus scenicus (Clerck) 
Woburn Abbey (Lord Tavistock) ; Luton (F.P.S.) 
PISAURIDA 
Spiders with eight eyes in three rows of 4,2, 2; the small anterior eyes being sometimes 
in a straight line, sometimes recurved and sometimes procurved. Those of the other two rows 
are situated in the form of a rectangle of various proportions and are much larger than the 
eyes of the anterior row. The tarsal claws are three in number. Pisaura runs freely over 
the herbage, carrying its egg-sac beneath the sternum ; while Dolomedes isa dweller in marshes 
and swamps. 
8. Pisaura mirabilis (Clerck) 
Woburn Abbey (Lord Tavistock) ; Luton (F.P.S.) 
Known also as Dolomedes, or Ocyale, mirabilis. 
LYCOSIDZE 
The members of this family are to be found running freely over the ground, and carry- 
ing the 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. Eyes and tarsal claws as in the Pisaurida, 
with slight differences. 
9. Lycosa ruricola (De Geer) 11. Pardosa lugubris (Walckenaer) 
Luton (F.P.S.) Woburn Abbey (Lord Tavistock) ; Luton 
(F.P.S.) 
10. Pardosa amentata (Clerck) 12. Pardosa annulata (Thorell) 
Luton (F.P.S.) Luton (F.P.S.) 
AGELENIDZ 
Spiders with eight eyes, situated in two straight or more or less curved transverse rows. 
Tarsal claws, three. 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 in the 
herbage, or in the chinks in the walls of outhouses and barns, wherever the various species 
may happen to be found. The habits of Argyroneta, the water spider, are however quite 
different. ‘The posterior pair of spinners is much longer than the others in the more typical 
genera of this family. 
13. Tegenaria parietina (Fourcroy) 14. Tegenaria derhami (Scopoli) 
Woburn Abbey (Lord Tavistock) Luton (F.P.S.) 
Abundant in the London district. Known A very common species everywhere. 
also as I. guyonii and I. domestica. 
I 89 12 
