447 



adult fomalos, but no males, in April, 1880. I had previously 

 received it from Paisloy (near Glasgow) and Borwiokshiro, and 

 from Wiclcen Fen noar Cambridge ; but it appears to bo a rare 

 spider, as only a singlo example was found in each of the throe 

 latter localities. 



WALCKENAERA OBTUSA. 



Walckenaera obtusa, Blaokw., I.e., p. 224, pi. xx., fig. 208. 



Length of the adult malo l-7th of an inch, that of the fomalo 

 being 1-0 1 li . 



The cephalo-thorax of this fine spocios is of a deep brownish- 

 black colour ; the surface, excopting the upper part of the caput, 

 being covered with small puncturos and striae. The caput is 

 rather raised, and the ocular region a little prominent, but there 

 is no special elevation or protuberance. 



The eyes are of moderate and nearly equal size, and rather 

 closely grouped together ; those of the posterior row are 

 separated by about equal intervals rather exceeding a diamotor's 

 extent. The height of the clypeus equals (if it does not exceed) 

 two-thirds of that of the facial spaco, and projects forwards 

 gradually to its lower margin. 



The legs are modorately long and strong, 1.4.2.3, of a bright 

 orange-red colour, and furnished with fine hairs. 



The palpi are long, the humeral and cubital joints similar to 

 the legs in colour ; the latter joint is long, clavate and furnished 

 with short black hairs. The radial joint is short, blackish-brown, 

 with a long, strongish, peculiarly shaped apophysis at its fore 

 extremity rather on the inner side, and another more prominent, 

 but shorter, more taporing and obtusely pointed, on the outer side, 

 tho point being furnished with several contiguous, short, strong, 

 spine-liko bristles. Between these two apophyses is a short, 

 sharp-pointed thorn-like prominence. Beneath the radial joint 

 there is, also, a third apophysis, but much smaller and less con- 

 spicuous than tho others. The digital joint is large, and of a deep 

 brownish-black hue. The palpal organs aro complex, and sur- 



