ON NEW AND RARE BRITISH ARACHNIDA. 191 



The colour of the ccphalothorax and fakes is yellow, tinged 

 with brown, that of the legs and palpi of a clearer yellow, and 

 the abdomen dull yellow-brown. 



The eyes of the hinder row are of equal size, and are equidistant 

 from each other, the intervals being an eye's diameter. The 

 two rows form a transverse oval, the front row rather the shortest. 

 Its central pair of eyes are separated by half a diameter, and each 

 is a diameter's distance from the fore-lateral eye on its side. 

 The four centrals form a trapezoid a little longer than broad, and 

 narrowest in front. The height of the clypeus a little exceeds 

 half that of the facial space. 



Legs, 4, 1,2, 3, the difference in length not being great. They 

 are furnished with hairs, bristles, and not very strong spines, the 

 latter chiefly on the tibiae of the second, third, and fourth pairs. 



The palpi have a few longish spines on the digital, radial, and 

 cubital joints. 



The. fakes are tolerably long, nearly cylindrical, slightly diver- 

 gent and furnished with a short row of 3 — 4 strongish teeth 

 towards their extremities on the inner side. 



The sternum, which is heart-shaped, has it posterior extremity 

 drawn out between the coxae of the fourth pair of legs, joining in 

 with the connecting pedicle without any apparent break in its 

 continuity. This character may possibly prove to be of specific 

 importance. 



The abdomen is thinly covered with hairs, and the genital 

 process is of very characteristic form. 



A single adult female received from the Rev. J. E. Hull from 

 Northumberland. 



LIST OF ARACHNIDA 



(In the foregoing pages ivith references to page and Plate A). 

 Order Araneidea. 



Atypus affinis, Eichw. p. 1 64. 



Ischnothyreus velox, Jackson p. 165. figs. 1-6. 



