NEW AND RARE BRITISH SPIDERS 5 1 



Scleroschema gen. nov. 



General form of Arceoncus (with which it also agrees in type 

 of genitalia) but the legs of both sexes are normal in form and 

 clothing, with the tarsi as long or nearly as long as the meta- 

 tarsi; the cuticle is more coriaceous; the curvature of the 

 front line of eyes is much less. From Troxochrus it differs 

 in the narrow caput, which is without postocular furrows in 

 the male, and in the genitalia, which are of quite a different 

 type. From all its nearer allies it differs in having only three 

 teeth on the inner margin of the fang-groove. 



British species : hiemale Bl. (type) ; ignobile Cb. 



Troxochrus scabriculus Westr., with which these spiders 

 have been associated, is a summer spider, while these two 

 species mature much later in the year. 



*Scleroschema reginaldi n, sp. An adult female, 

 Fenham, Northumberland. Description and figures 

 below. 



Troxochrus exilis Bl. — Tapinocyba pallens Cb. Auctt. 



Blackwall's description (Spiders G. B. & I., p. 305) of 

 his Walckenaera exilis and of its habitat fit pallens Cb. so 

 exactly, to the exclusion of every other species known to 

 me, that comparison of types could hardly make the 

 synonymy more certain ; therefore, though the types of 

 exilis Bl. are lost, I have no hesitation in applying Black- 

 wall's name to the spider commonly called Tapinocyba 

 pallens Cb. 



This species occurred in the pine woods of Altyre, near 

 Forres, among pine needles, along with Oonops pulcher 

 Tempi, and other commoner species. 



Troxochrus prsecox Cb. Both sexes, Fenham, May. 



Gongylidiellum vivum Cb. An adult female, Culbin 

 sands. First record for Scotland. 



Diplocephalus castaneipes Sim. An adult female, 

 Lochan Dorb, Inverness. This is the first record for 



