THE SPIDERS OF THE TYNE VALLEY. 369 



Savignia frontata (Bl.). Very abundant throughout the 

 British Isles. In October the adults swarm on walls, 

 palings, etc., previous to making aerial trips to new 

 hunting grounds. They hibernate under fallen leaves, 

 in woods, and hedge bottoms. This spider has only been 

 recognised abroad in Scandinavia and Germany, which, 

 considering its unmistakeable form, is very remarkable. 



Diplocephalus cristatus (Bl.). Fairly common in Tyne- 

 dale. It is generally found either among dead leaves in 

 gardens, or near the river bank. It occurs in many places 

 in England, Scotland, and Wales. Not recorded for 

 Ireland, it has a wide European distribution. 



Diplocephalus permixtus (Camb.). Fairly common 

 among moss in the swamps, but never actually swarming 

 as in some parts of Britain, It occurs in Ireland, France, 

 and Germany, and is widespread in Britain. 



Diplocephalus adjacens (Camb.). This interesting spider 

 was first found in September, 1902, among grass and 

 herbage on the banks of the Tyne. It was previously 

 unknown to science, and has never yet occurred else- 

 where than in similar situations near Hexham. The 

 species is adult in September, and not at all rare close to 

 the river. It hibernates, and may be found in consider- 

 ably diminished numbers in the spring. 



Diplocephalus Jacksonii (Camb.). In September, 1903, 

 on going to a place on the river bank to collect specimens 

 of the last species, I found occurring with them several 

 males, which in size and facies closely resembled them, 

 but which differed greatly in the structure of the caput. 

 Several females also among my captures on that day 

 differed slightly from the types of D, adjacens (Camb.). 

 These probably correspond with the males under dis- 

 cussion, at all events they are at present beheved to do 

 so. Mr. Cambridge described and figured both species 

 in Proc. Dorset Field Club, vol. xxiv., 1903. The present 



