NEW AND RARE BRITISH SPIDERS. 33 



Palpi slender, the cubital, radial, and digital joints darker in 

 colour than the legs, and furnished with stronger bristles. 



Fakes moderate in length and strength, slightly divergent, and 

 somewhat contracted at their fore extremity ; colour like that of 

 the cephalothorax. Teeth on the inner margin at the fore 

 extremity very minute. 



Maxilla short, strong, and much bent towards the labium. 



Labium broad, very narrow, and its apical margin hollow- 

 truncate. Colour of maxillae and labium, pale yellow-brown. 



Sternum, broad oval, truncate before, its hinder extremity a 

 little produced into a broad obtuse termination ; colour, yellow- 

 brown. 



Abdomen, rather large, short-oval, upper convexity considerable, 

 genital process large, and very prominent ; the structure is very 

 characteristic, but somewhat resembling that of the most nearly 

 allied species, S. phokommoides, Cambr., on a large scale. The 

 abdomen is glossy, thinly clothed with short hairs, and of a dull 

 black colour. Spinners short, those of the superior pair smaller 

 than the inferior, both pairs two-jointed, the terminal joints very 

 short. 



A single example of this species was found by Mr. W. Evans, 

 at Comrie, in Scotland ; it may be distinguished at once from 

 S. phokommoides by its much larger size, and greater development 

 of the genital process, as well as by other characters. 



Gongylidium gibbum, sp., n. 



Adult female, length nearly i^ lines. 



Cephalothorax, short, broad, broadly and roundly truncated 

 before ; lateral marginal impressions at caput, slight and gradual ; 

 immediately behind the ocular area, looked at in profile, the 

 caput rises slightly and gradually to the occiput, with a distinct 

 kind of limpet-shaped elevation or gibbosity. The height of the 

 clypeus, which projects forwards is equal to slightly more than 

 half that of the facial space. The colour of the cephalothorax is 

 yellow-brown, with deep blackish-brown striated markings on the 

 caput and thorax following the normal indentations ; the ocular 



