List of Araneidea and Phalangidea. 317 



Walckenaera erontata, Bl. Adult male, Berwickshire 

 collection ; adult males, South Middleton dean and 

 "Wooler ; and one on Cheviot Hill. 



acuminata, Bl. Adults of both sexes, Wooler 



district ; a single adult male, Langleyford ; one on 

 Cheviot Hill, and another in the Berwickshire col- 

 lection. 



Genus Pachygnatha, Sund. 



Pachygnatha Clerckii, Sund. Adults of both sexes, 

 Wooler, South Middleton dean, and Berwickshire 

 collection, 



Degeerii, Sund. Adults of both sexes : Wooler, 



Langleyford, Hedgehope, and Berwickshire collec- 

 tion. 



Genus Tapinopa, Westr.=Linyphia, Bl., ad partem. 



Tapinopa longidens, Bl. An adult female, Cheviot 

 Hill. 



unicolor, sp. n. Adult female, length very 



nearly 2J lines. This Spider is nearly allied to T. 

 longidens, resembling it in general form and struc- 

 ture, but easily distinguished by an almost total 

 absence of pattern on the cephalothorax and a 

 unicolorous abdomen, as well as by the slightly 

 larger size and closer contiguity of the eyes of the 

 fore central pair, and the generally rather closer 

 grouping of the eyes. The colour of the cephalo- 

 thorax, legs, and palpi is of a uniform yellow 

 colour, the abdomen paler, and thinly clothed, with 

 dark curved hairs. The eyes of the fore central 

 pair are distinctly the largest of the eight, and are 

 separated by less than an eye's diameter, while the 

 interval between those of the same pair in T. 

 longidens is quite equal to, if not greater, than an 

 eye's diameter. This certainly holds good in com- 

 parison of the females of the two species, but the 

 fore central eyes of the male of T. longidens appear 

 to be nearer together than those of the female, and 

 so probably a similar difference between the sexes 

 of T. unicolor will be found to exist when the male 

 of this latter shall be discovered. The height of 

 the clypeus also in T. longidens is greater than that 

 of T. unicolor ; in the latter species it does not 

 exceed the diameter of one of the fore central eyes, 

 while in T. longidens it exceeds it perceptibly. The 

 f dices are very similar in both species, being strong, 

 prominent towards their base in front, divergent at 



