500 ON SOME NEW AND RARE BRITISH COLLEMBOLA 



Many examples were also found congregated together on the 

 surface of some quiet pools near by. It is evident that the 

 habits of A. tullbergi resemble those of A. inaritima, with the 

 exception that the former is a riparian insect and maritima 

 purely maritime. A solitary spring-tail found by the Derwent 

 side near the Paper Mills at Lintzford on the occasion of the 

 Vale of Derwent Naturalists' Field Club's meeting in the 

 Chopwell woods, May nth, 1907, is also referable to A. 

 tullbergi, whilst since then I have found the species plentifully 

 at the Ladies' Steps near Swalwell, and in the autumn of 1908 

 took a single specimen by the river side at Wylam-on-Tyne. 

 Anurida gra?iaria and A. viariiiiiia also occur in our northern 

 counties. 



British Distribution. — Wylam-on-Tyne, Northumber- 

 land ; and Swalwell, Winlaton Mill, and Lintzford in the 

 Derwent Valley, county Durham. The species is recorded 

 from Sweden (Schott), Finland (Renter), and from Florida 

 (Coll. Einar Lomberg). 



Family ENTOMOBRYID^ Dalle Torre. 



. Sub-Family ISOTOMIN^ Schaffer 



Genus FOLSOMIA Willem. 



Folsomia quadrioculata (Tullb.). 



Isototna qttadi'ioculata Tullberg, Ofvers. af Kongl. Vetens- 

 kaps-Akad. ForhandL, xxviii., p. 152, 1871. 



A minute grey spring-tail found amongst dead leaves in a 

 wood by the Derwent side in the spring of 1907 has been 

 identified as this species by Prof. Carpenter, and is an 

 interesting addition to the British fauna. In April, 1908, ray 

 friend Mr. Evans found numerous specimens oi F.qnadrioculafa 

 living in some growing tufts of moss and Seditm anglicum from 

 the Isle of May. 



Since it was described by Tullberg from Sweden F. quadrio- 

 ciilata has been recorded from Finland, Germany, Bohemia, 

 etc. 



