SPIDERS 



The greater part of the species recorded were collected by Mr. 

 F. P. Smith of Islington, and the rest by the present writer. 



In cases where the generic or specific name quoted is not that under 

 which the spider has usually been recognized in the works of English 

 authors, a note has been added calling attention to the fact. With these 

 few preliminary remarks we may proceed at once with the list of the 

 spiders of Surrey. 



ARANE^ 



MTGALOMORPHM 



ATYPID^E 



Spiders with eight eyes, four lung books, 

 I. Atypus qffinis, Eichwald. 



Wimbledon Common (F. P. S.). 



Adult in May, June and October. 



This is the only example of the Mygalo- 

 morpba found in the British Islands. Though 

 belonging to the same sub-order as the well- 

 known trap-door spiders of the south of 

 Europe and other tropical and sub-tropical 

 regions, distinguished from the Arachnomorphee 

 by the possession of two pairs of pulmonary 

 organs or lung books and by the vertical 

 movement of the mandibles, these spiders 

 make no trap-door at all. 



The retreat consists of a long tunnel, half 

 an inch in diameter and from seven to nine 

 inches long, burrowed in the soil, and lined 

 throughout with white silk, terminating at 

 the lower end in a slightly enlarged cell, where 

 the egg-sac is formed and the young are 

 hatched and tended by the female. The 

 upper end of the silk lining is prolonged for 



and three tarsal claws. 



about three inches beyond the extremity of 

 the burrow, forming a loose tube, closed at 

 the end, and either lying on the surface of the 

 soil, woven amongst the roots of heather and 

 herbage, or hanging down free, according to 

 the nature of the surroundings. 



Mr. Enock reports that the spider does not 

 leave this retreat in search of prey, but waits 

 in the slack portion of the tube lying outside 

 the burrow until some insect sets foot upon 

 this silken purse-like structure. Instantly 

 the fangs of the spider's mandibles are struck 

 through the walls of the tube, the insect 

 seized and dropped into the burrow through a 

 rent in the silk, which is afterwards mended 

 from within. The male is smaller, almost 

 black, and may sometimes be found moving 

 slowly about in the sunshine in the neigh- 

 bourhood of the colony. The spider has also 

 been recorded under the names A. su/zeri and 

 A. piceus by English authors. 



ARACHNOMORPHTE 

 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. 



2. Dysdera cambridgii, Thorell. This spider is also known as D. rubicunda, 



Wimbledon. Blackwall. 



Not uncommon under stones and bark of 4. Harpactes bombergii (Scopoli). 



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. 



This spider is also known as D. erythrina, 

 Blackwall. 



3. Dysdera crocota, C. L. Koch. 

 Horsley (F. P. S.). 



Larger than the last species, with a deep 

 orange-pink carapace, orange legs, and abdomen 

 with a delicate rosy pink flush. The palpal 

 bulb of the male has a cross-piece at the apex. 



Wimbledon. 



Common on heaths, also to be met with 

 under bark of trees, and recognizable by its 

 ant-like linear form, black carapace and pale 

 abdomen, and its three tarsal claws. 



5. Segestria senoculata (Linn.). 



Wimbledon. 



Common under bark of trees, amongst 

 detached rocks at the foot of cliffs, and in the 

 crevices of loose stone walls. Recognizable 

 by its linear form and the black diamond- 

 shaped blotches on the dorsal surface of the 

 abdomen. 



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