134 OR. A. RANDELL JACKSON ON THE 



slightly club-shaped in all the specimens I have yet seen. 

 There seems to be very little variation in the tumidity of the 

 tibia and tarsus. 



The epigyne is very broad, and its shape is quite character- 

 istic in all specimens whether sexually active or not. 



The profile of the cephalothorax is peculiar on account of 

 the depression between the caput and the thorax at the 

 occiput, and because of the very hollow clypeus. These 

 irregularities cause the ocular area to appear very prominent, 

 and rather isolated from the rest of the cephalothorax. In the 

 other species of the genus this is not the case. For the rest 

 the spider is rather variable in the pigmentation of the 

 cephalothorax and ocular area. There is usually a dark 

 transverse mark at the thoracic juncture, and dark lines 

 radiating from this to the posterior eyes. The ocular area is 

 frequently deeply pigmented, and the eyes may be placed on 

 black spots. Sometimes however this pigmentation is vesti- 

 gial, and occasionally the cephalothorax is of a uniform pale 

 yellow-brown, the eyes in such cases not being placed upon 

 black spots. In both sexes of this spider the proximal tooth 

 on the anterior border of the fang groove is very small indeed, 

 and so is the single tooth on the posterior border. In the 

 other species of the genus these two teeth are much longer. 



Agyneta conigera Camb. is a common and widespread 

 spider in the British Isles. It is found on the ground amongst 

 moss, heather, and herbage, as well as on the trunks and 

 branches of trees. It is adult in early summer. 



The remaining species of the genus are all very much alike. 

 No reliable characters can be drawn from the relative sizes 

 . and shapes of the different parts of the cephalothorax. Specific 

 differences cannot be founded upon the position of the eyes. 

 The lamella characteristica of each species readily furnishes 

 easy characters for identifying the males, but the females must 

 be recognized from the structure of the vulva?, which is not at 

 all times easy. 



