A HISTORY OF DURHAM 



77. Gonatium IsabeHlnum (C. L. Koch). 



Harperley ; Wolsingham ; Durham (J. E. H.) 

 Known also as Neriene rubella, Blackwall. 



78. Dicyphus cornutus (Blackwall). 



Durham ; Upper Teesdale (J. E. H.). 

 Known also under Neriene. 



79. Hypomma bituberculatum (Blackwall). 



Durham ; Upper Teesdale ; Wolsingham 



(J.E.H.). 

 Known also under Neriene. 



80. Dismodicus bifrons (Blackwall). 



Durham ; Upper Teesdale ; Wolsingham 



(J. E. H.) 

 Known also under Wakkenttra. 



8 1. Kulczynskiellum retusum (Westring). 



Durham (J. E. H.). 



Known also under Neriene, and Erigpne, also as 

 Nerieue elevata, O.P.-Cambridge. 



82. Kulcyzynikiellum fuicum (Blackwall). 



Durham (J. E. H.). 

 Not common. September. 



83. CEJothorax tuberosus (Blackwall). 



Durham (J. E. H.). 

 Known also under Neriene. 



84. BlackvialRa acuminate, Blackwall. 



Durham ; Urpeth (J. E. H.). 

 Known also under the name Wakkenara. 



85. Dicymbium tibiale (Blackwall). 



Urpeth (J. E. H.). 



A rare spider. Adult males, August and Sep- 

 tember. 



86. Plas'iocr<grus alplnus (O.P.-Cambridge). 1 



Upper Teesdale (J. E. H.). 



87. Wlderia antica (Wider). 



Durham ; Upper Teesdale (J. E. H.). 

 Not uncommon ; adult in spring. Known also 

 under Wakkenitra. 



88. Diphcephalus humilis (Blackwall). 



Durham 0- E. H.). 



Under stones and at the roots of grass in spring 

 and autumn. 



89. Diphcephalus picinus (Blackwall). 



Durham (J. E. H.). 

 Rare ; adult males in spring amongst grass. 



90. Pocadicnemis pum'tla (Blackwall). 



Durham ; Ryhope (J. E. H.). 

 Rare ; among grass in spring and summer. 

 Known also under Walckenara. 



91. Cornicularia cuspidata (Blackwall). 



Durham ; Upper Teesdale (J. E. H.). 

 Not rare ; on grassy banks. Known also under 

 Wakkenara. 



92. Cornicularia unicornis (O.P.-Cambridge). 



Durham (J. E. H.). 



Rare ; amongst grass in the spring. Known 

 also under Wakken<era. 



93. Troxochrus icabriculus (Westring). 

 Durham (J. E. H.). 



Rare. Known also under Erigone and as Walck- 

 en<era aggerii, O. P.-Cambridge. 



94. Lophomma punctatum (Blackwall). 

 Durham (J. E. H.). 



Not common ; under stones, spring and autumn. 

 Known also under Wakkenitra. 



95. Peponocranium ludicrum (O.P.-Cambridge). 



Upper Teesdale (J. E. H.). 

 A single adult male in May at an altitude of 

 1,200 feet. Known also under Wakkeniera. 



96. Microctenonyx subitaneus (O.P.-Cambridge). 



Durham (J. E. H.). 



A single adult male in June, among loose stones. 

 Known also under Wakkentera and Tapinocyba. 



THERIDIID.E 



The members of this family have eight eyes 

 situated very much like those of the Argyopidtt, but 

 the mandibles are usually weak, the maxilla: are 

 inclined over the labium, and the posterior legs 

 have a comb of stiff curved serrated 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. 



97. Iheridion variant, Hahn. 



Durham ; Wolsingham ; Ryhope (J. E. H.). 

 A very much smaller species, varying consider- 

 ably in colour, found abundantly in greenhouses 

 and also amongst shrubs in the open garden. This 

 species makes no tent-like retreat, but sits close to 



the one or more pale rounded egg-sacs usually spun 

 up against a beam or window-sill. 



98. Tberidion denticulatum (Walckenaer). 

 Durham ; Wolsingham (J. E. H.). 



Also a very small and abundant species, occurring 

 on the outside of windows and outhouses and also 

 on walls and palings. It makes no tent-like retreat 

 and the habits are very similar to those of the last 

 species. Also taken on shrubs and tree trunks. 



99. Theridion sisyphmm (Clerck). 



Durham ; Wolsingham ; Ryhope (J. E. H.). 



Very common on gorse and holly bushes, where 



they construct a tent-like domicile and spin up 



1 This species has been expunged from the Brit. List (Proc. Dart. Nat. Hist., and A. F. Club, xxiii. p. 23, 1902). All 

 the examples hitherto recorded as P. Alpinui have been ascertained to be Diphcephalus (Pleetiocrterut) larifrons, O. P.-Camb. ; 

 and I feel no doubt but that the spider recorded here is also of this last species, though I have not had an opportunity of 

 examining the specimen. O. Pickard-Cambridge, April 1410, 1905. 



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