walls of outhouses, wherever the various species may happen to be found. The posterior pair of spinners is usually much longer than the other two pairs.
15. Agelena labyrinthlca (Clerck) Colmbrook (Webb)
16. Tegenaria derbami (Scopoli) Chipping Wycombe (F. P. S.)
17. Tegenaria atrica, C. L. Koch Burnham Beeches (Webb)
ARGIOPIDÆ
The spiders included in this family have eight eyes, situated in two rows, the lateral eyes of both rows being usually adjacent, if not in actual contact, while the central eyes form a quadrangle. The tarsal claws are three, often with other supernumerary claws. The web is either an orbicular (wheel-like) snare, or consists of a sheet of webbing beneath which the spiders hang and capture the prey as it falls upon the sheet.
18. Araneus umbraticus, Clerck Colmbrook (Webb) ; Chipping Wycombe (F. P. S.) 19. Araneus diadematus, Clerck Chipping Wycombe (F. P. S.) 20. Araneus marmoreus, Clerck (O. P. C.) 21. Linyphia triangularis (Clerck) Colmbrook (Webb) 22. Linyphis montana (Clerck) Colmbrook (Webb) 23. Linyphia hortensis, Sundevall Colmbrook (Webb)
THERIDIIDÆ
The members of this family have eight eyes situated very much like those of the Argiopidæ, but the mandibles are usually weak, the maxillae are inclined over the labium, and the posterior legs have a comb of stiff curved spines beneath the tarsi. The web consists of a tangle of crossing lines, and the spider often constructs a tent-like retreat wherein the egg- sac is hung up.
24. Theridion ovatum (Clerck)
DICTYNIDÆ
The species possess the calamistrum and cribellum and three tarsal claws, but the eyes, eight in number, are situated in two transverse rows, the laterals being in contact. They construct a tubular retreat with an outer sheet of webbing, which is covered with flocculent silk made with the calamistrum with threads from the cribellum.
25. Amaurobius similis (Blackwall) Burnham Beeches (Webb) Known also under Ciniflo.
26. Amaurobius fenestralis (Strœm) Colmbrook (Webb) Known also as Ciniflo atrox.
