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 A HISTORY OF HERTFORDSHIRE ARANE^E ARACHNOMORPH& DYSDERID.E Spiders with six eyes and two pairs of stigmatic openings, situated close together on the genital rima ; the anterior pair communicating with lung books, the posterior with tracheal tubes. Tarsal claws, two in Dysdera, three in Harpactes and Segestria. 1. Dysdera cambridgii, Thorell. Hoddesdon (F. M. C.). Not uncommon under stones and bark of trees, where it lurks within a tubular retreat. The spider is easily recognizable by its elongate form, orange legs, dark mahogany carapace and pale clay-yellow abdomen. The palpal bulb of the male has no cross-piece at the apex. The spider is also known as D. erythryna, Blackwall. 2. Dysdera crocota, C. L. Koch. Hoddesdon (F. M. C.). Larger than the last species, with a deep orange-pink carapace, orange legs, and abdo- men with a delicate rosy-pink flush. The palpal bulb of the male has a cross-piece at the apex. This spider is also known as D. rubicunda, Blackwall. DRASSID^E Spiders with eight eyes, situated in two transverse rows. The tracheal openings lie just in front of the spinners. The tarsal claws are two in number, the anterior pair of spinners are set wide apart at the base, and the maxillae are more or less impressed across the middle. 3. Harpactes hombergii (Scopoli). Hoddesdon (F. M. C.). Rare under bark of trees, and recognizable by its linear ant-like form, black carapace, and pale clay-yellow abdomen and three tar- sal claws. 4. Segestria senoculata (Linnaeus). Hoddesdon (F. M. C.). Not common ; under bark of trees, in the crevices of loose stone walls and amongst detached rocks. Recognizable by its linear form and the black diamond-shaped blotches on the dorsal surface of the abdomen. 5. Oonops pulcher, Templeton. Hoddesdon (F. M. C.). Rare ; a very small linear brick-red spider. 6. Drassodes lapidosus (Walckenaer). Hoddesdon (F. M. C.). Very common under stones. Also known as Drassus lapldicolens. 7. Scotophtsus blackwallii (Thorell). Hoddesdon (F. M. C.). A dark elongate mouse-grey spider, often found wandering about the walls of dwelling and outhouses at night. Known also as Drassus sericeus, Blackwall. CLUBIONID^: Spiders with eight eyes, situated in two transverse rows. The tracheal openings lie immediately in front of the spinners. The tarsal claws are two in number, but the anterior pair of spinners are set close together at the base ; the maxillae are convex and not impressed across the middle. 8. Micaria pulicaria (Sundevall). Hoddesdon (F. M. C.). A small dark spider, iridescent and shining, with a white cincture round the middle of the anterior half of the abdomen. Known also as Drassus nitens, Blackwall. 9. Phrurolithus festivus, C. L. Koch. Hoddesdon (F. M. C.). Also known as Drassus propinquus. Black- wall. 10. Zora spinimana (Sundevall). Hoddesdon (F. M. C.). 1 1 . Clubiona stagnatilis, Kulczynski. Lea Valley (F. M. C.). Known also as C. kolosericea, Blackwall. 12. Clubiona terrestrij, Westring. Hoddesdon (F. M. C.). 13. Clubiona reclusa, O. P.-Cambridge. Hoddesdon (F. M. C.). 14. Clubiona lutescens, Westring. Hoddesdon (F. M. C.). 15. Clubiona pallidula (Clerck). Hoddesdon (F. M. C.). 172