ON NEW AND RARE BRITISH ARACHNIDA. 169 



Family HAHNIID^S. 



Hahnia Candida, Sim. 



An adult female was received from Portland in June 1907, 

 where it was found by Dr. A. R. Jackson. No other record 

 of this minute species has been made in England since its 

 first discovery as a British spider at Portland by myself, in 

 or about the year 1854. I have, however, received it once 

 since, from Scotland. 



Hahnia pusilla, L. Koch. 



I have received from Dr. A. R. Jackson an adult male 

 of this species from Delamere Forest, Cheshire. 



Family THERIDIIDJE. 



Theridion aulieum, Lucas. 



Adults of both sexes were found, and sent to me from 

 the coast near Sidmouth, by Dr. A. R. Jackson, in June, 

 1907. It is a very distinct species, and must be reckoned 

 as yet among the rarest spiders of this genus found in 

 Britain. 



Theridion impressum, L. Koch, 



Dr. A. R. Jackson met with both sexes of this spider in 

 some abundance at Delamere, Cheshire, in 1907. 



Theridion riparium, Bl. 



An adult female was sent to me from Woking, where it 

 was found by Mr. H. Donisthorpe in a nest of an ant 

 (Formica sanguined j in May, 1907. 



Theridion Blaekwallii, Cambr. 



A female of this spider was found in Surrey (probably 

 Richmond Park) by Mr. Bennett, and sent to me by Dr. A. 

 R. Jackson in October, 1907. Adult males were also 

 received from Mr. D. R. P. Beresford, by whom they were 

 found at Belling, Northamptonshire. 



