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A HISTORY OF BERKSHIRE 36. Batbyphantes concolor (Wider). Windsor (A.P.) Known also as Theridion filipe;, Blackball. 37. Batbyphantes arcumspectus (Blackwall). Windsor (A.P.) 38. Labulla thoracica (Wider). Windsor (A.P.) 39. Erigone atra (Blackwall). Windsor (A.P.) 40. Kulczynskiellum retusum (Westring). Windsor (A.P.) D ; phus cgrnutus (Blackwa m 4 2 - Wahkenaerla crtstata, Blackwall. Windsor (A.P.) 43. Entelecara erythropus (Westring). Windsor (A.P.) MIMETID-ffi Spiders of this family are similar in general respects to the Tberidiid<e, having eight eyes and three tarsal claws. The species of Era construct a small brown pear-shaped or cylindrical egg-cocoon suspended on a fine silken stalk. 44. Era tuberculata (De Geer). Wokingham (C.W.P.) THERIDIID^E The members of this family have eight eyes, situated very much like those of the Arglopldee ; 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. The tarsal claws are three in number. 45. Theridion formosum (Clerck). Windsor (A.P.) Known also as T. sisyphium, Blackwall. 46. Theridion tepidariorum, C. L. Koch. Windsor (A.P.) 47. Theridion sisyphium (Clerck). Windsor (A.P.) Known also as T. nervosum, Blackwall. 48. Theridion denticulatum (Walckenaer). Windsor (A.P.) cri -,- tr L 40. Theridion variant. Hahn. Windsor (A.P.) cr, < ... r> T ir i. 50. Theridion vittatum, C. L. Koch. w j /A DN Windsor (A.P.) Known also as T. pulcbellum (Walckenaer). 51 52 Theridion pa/lens, Blackwall. Windsor (A.P.) Theridion ovatum (Clerck). Windsor (A.P.) Known also under the name Phyllonetbis lineata. 53- Theridion tinctum, Walckenaer. Windsor (A.P.) Theridion bimaculatum (Linnzus). Windsor ( A ' P '> Steatoda bipunctata (Linnaeus). v 54 55 JJ n Known also as Theridion quadnpunctatum. . , r Blackwall. The spiders belonging to this family possess three tarsal claws, and the eyes, eight in number, situated in two transverse rows, the laterals being in contact. The cribellum (or extra pair of spinning organs) and the calamistrum (a row of curving bristles on the protarsi of the fourth pair of legs) are present in all members of the family. They construct a tubular retreat with an outer sheet of webbing, which is covered with a flocculent silk made with the calamistrum from threads furnished by the cribellum. 56. Amaurobius similis (Blackwall). 58. Dictyna arundinacea (Linnaeus). Windsor (A.P.) Wokingham (C.W.P.) Common. Known also under the name Abundant. Known also as Ergatis benigna, Ciniflo. 57. Amaurobius ferox (Walckenaer). Windsor (A.P.) Common. Known also under the name Ciniflo. Blackwall. 59. Dictyna uncinata. Thorell. Windsor (A.P.) 6o D i ctyna var l a bUlt, C. L. Koch. (O.P.-C.) 6 1. Uloborus walckenaerius, Latreille. Wokingham (C.W.P.)