620 Mr, Blackwall's Descriptions of new Species of Spiders. 



eyes of the anterior row are the largest of the eight. Abdomen short, 

 broad, thickly covered with hairs, somewhat larger at the posterior than 

 the anterior extremity, convex above, projecting over the base of the 

 cephalo-thorax ; it is of a very dark brown colour, approaching to black, 

 the under part being the palest ; along the middle of the upper part 

 extends a series of very obscure, angular lines of a lighter hue, whose 

 vertices are directed forwards ; and on each side of the anterior part, 

 near its union with the cephalo-thorax, there is a blackish spot of an 

 ■oval form. Spinners yellowish red, arranged in a transverse row imme- 

 diately below the anus ; the exterior ones, which are the longest, are 

 triarticulate, and have the papillae or spinning-tubes disposed along the 

 inferior surface of the terminal joint. Plates of the spiracles yellowish 

 white. <ii^;^o it.,.; 



The male is rather smaller than the female, which it resembles in 

 colour, and in the relative length of its legs ; the absolute length of the 

 organs of progression, however, is greater, a posterior leg measuring 

 T^ths of an inch. The second joint of the palpi has a curved, pointed, 

 yellowish red process on the under side, near the middle ; third and 

 fourth joints short; the former is much the larger, veiy gibbous above, 

 and has a small, pointed, blackish apophysis near its extremity on the 

 outer side ; the latter has a strong, blackish apophysis at its extremity on 

 the under side, which is directed upwards, its curved point being in con- 

 tact with the small apophysis of the third joint ; fifth joint oval, mode- 

 rately convex and hairy externally, concave within, comprising the palpal 

 organs ; they are highly developed, not very complicated in structure, 

 vascular, surrounded by a filiform, black spine, and are flesh-coloured. 

 The convex sides of the terminal joints of the palpi are directed from, 

 and the palpal organs towards each other. 



This species, which resembles Textrix agilis in the relative length of its 

 legs, is found under stones in moist pastures near Llanrwst in Denbighshire. 

 The males have the palpal organs completely developed in the month of 

 August. 



