ON NEW AND RARE BRITISH ARACHNIDS. 89 



Eyes of central quadrangle form a square ; the fore pair 

 largest, the interval between those of the hinder pair rather 

 more than a diameter. 



Legs moderate in length and strength, 1, 2, 4, 3, anterior 

 pair much longest ; colour pale dull yellowish, clearest on the 

 femora ; the other joints somewhat suffused with duller 

 yellowish ; banded faintly with dark brown, chiefly at the 

 extremities of the joints ; furnished with hairs, bristles, and 

 a very few long slender spine-like bristles. 



Palpi short, similar to the legs in colour, and of the ordinary 

 Theridion form, Digital joint of moderate size ; obtuse oval 

 in form ; palpal organs well developed, but not complex ; 

 the most noticeable process is a projecting one of a some- 

 what cylindical form, issuing from their anterior extremity 

 (see figg. 8, 9). 



Maxillce, Labium, and Sternum normal, dark brown the 

 latter, tinged with yellowish, and furnished with long, 

 curved, bristly hairs. 



F alces normal ; colour yellow-brown. 



Abdomen oval ; moderately convex above, of a dull luteous 

 ground colour, thickly spotted with variously-shaped small 

 spots of black and white, among which, under a lens of low 

 power, may be traced a longitudinal series of transverse 

 curved white lines running over and down the sides and a 

 broken central longitudinal very obscurely dentated band, 

 with a transverse curved white bar round the fore extremity. 

 The whole abdomen is covered on the upper side with long 

 bristly black hairs. The greater part of the fore half of the 

 under side consists of a coriaceous dark yellow-brown plate, 

 rounded and rather prominent behind and somewhat striated 

 on its surface. The rest of the under side is also dark yellowish 

 brown, and devoid of spots or markings. Halfway, however, 

 between the coriaceous plate is a strong transverse fold or 

 impression, but whether merely a fold in the epidermis or 

 connected with any orifice or not could not be ascertained. 



This spider is allied to Theridion denticulatum, Walck, but 

 independently of other differential characters, in the abdomen, 



