472 



gives it an appearance of being enclosed within a 

 metallic silvery ball, and renders it an interesting and 

 pretty object for an Aquarium. Wben living at Durham many 

 years ago, I kept an adult male of this spider in a small 

 tank for three years. It would occasionally, at night, come out 

 of the water and wander about the room. During one of these 

 excursions it probably received some injury as I found it next 

 day in a dying state. 



Argyroneta aquatica is abundant in many parts of England, 

 and probably will be found some day in Dorsetshire. Hitherto, 

 however, I have had but little opportunity of searching suitable 

 localities for it. 



GENUS COELOTES, Blachw. 



COELOTES? IMMACULATUS. 



Coelotes? rMMAOtrLATus, Cambr., Trans. Linn. Soc. xxviii., p. 

 444. 



Length of the female l-4th of an inch. 



The cephalo-thorax, legs, palpi, and fakes are bright reddish- 

 yellow-brown. Abdomen pale whitish clay-yellow. 



The spines on the legs consist chiefly of two parallel rows of 

 long ones beneath the tibiae and metatarsi. The terminal tarsal 

 claws are three in number. Spinners short and of nearly 

 uniform length. 



A very distinct spider, but its generic position is still uncertain. 



Found in Wicken Fen, near Cambridge. 



GENUS AGELENA, Walch 

 AGELENA HYNDMANNII. 

 AGELENA HYNDMANNII, Bfackw., l.C p. 154, pi. X., fig. 98. 



Length of the female l-6th of an inch. 



Cephalo-thorax brownish-green, much the darkest on the 

 caput ; thorax marked with dark converging lines. 



