and Systematic Arrangement of British Spiders. 25 1 



bergii, first briefly described by Scopoli (Entomologia Carniolica, 

 p. 403, No. 1119), for the young oiDysdera erythrina, from which 

 it differs in colour and organization. Being convinced of its spe- 

 cific distinctness by a careful examination of specimens captured 

 in 1832, in the same year I gave a description of it in the ' Lon- 

 don and Edinburgh Philosophical Magazine,' under the appel- 

 lation of Dysdera Latreillii ; but the trivial name, of course, is 

 superseded by that originally given to it by Scopoli. The tarsi 

 of this species, unlike those of its congeners, have three claws at 

 their extremity, and are destitute of scopulse. 



Crevices in rocks and walls and the under side of lichens 

 growing on trees are the favourite resorts of Dysdera Hombergii, 

 which is plentiful in the wooded districts of Denbighshire, Caer- 

 narvonshire and Lancashire ; and in the spring of 1849 I re- 

 ceived an immature female from Mr. J. Hardy, who took it in 

 Berwickshire. The sexes pair in May, and in the succeeding 

 month the female envelopes herself in an oval cell of white silk of 

 a slight texture, on whose exterior surface are disposed minute 

 pebbles, small pieces of indurated soil, and other heterogeneous 

 materials ; in this cell she deposits between 20 and 30 sphe- 

 rical eggs of a pale pink colour, which are not cemented together. 



Genus Segestria, Latr. 



205. Segestria perjida. 



Segestria perfida, Walck. Hist. Nat. des Insect. Apt. t. i. p. 267. 

 ■ florentina, Hahn, Die Araclm. B. i. p. 5. tab. 1. fig. 1 ; Koch, 

 Uebers. des Arachu. Syst. erstes Heft, p. 20 ; Die Araclm. B. v. 

 p. 72. tab. 164. fig. 385, 386. 

 cellaria, Latr. Gen. Crust, et Insect, tom. i. p. 88. 



The claim of this fine species to a place among our indigenous 

 1 spiders rests on the authority of Dr. Leach, who has recorded an 

 'nstance of its capture at Plymouth, in the Supplement to the 

 kh, 5th and 6th editions of the ' Encyclopaedia Britannica/ 

 article Annulosa. 



206. Segestria senoculata. 



Segestria senoculata, Walck. Hist. Nat. des Insect. Apt. t. i. p. 268 ; 



Latr. Gen. Crust, et Insect, tom. i. p. 89 ; Sund. Vet. Acad. 



Handl. 1831, p. 145; Hahn, Die Araclm. B. i. p. 6. tab. 1. 



fig. 2 ; Koch, Uebers. des Arachn. Syst. erstes Heft, p. 21 ; 



Die Arachn. B. v. p. 75. tab. 164. fig. 388. 

 Vitulus 24, Lister, Hist. Animal. Angl. De Aran. p. 74. tab. 1. fig. 24. 



Segestria senoculata is of frequent occurrence in many parts 

 3f England and Wales, and in December 1848 a young indivi- 

 lual was transmitted tome from Berwickshire by Mr. J. Hardy. 



