504 ON SOME NEW AND RARE BRITISH COLLEMBOLA 



Family ENTOMOBRYIN^ Schaffer 



Genus ORCHESELLA Templeton 



Orchesella rufescens (Linn.) Lubbock. 



Though this is a widely distributed European species, and 

 is a common one in many countries, it is only now that we 

 are able to record it as a British insect. In the spring of 1907 

 Dr. Randell Jackson found O. 7-tifescens not uncom.monly in 

 Delamere Forest. One or two other species of Orchesella 

 not yet known as British may be expected to occur in our 

 islands. 



Genus ENTOMOBRYA Rondani 



Certain members of this genus rank as the commonest and 

 most ubiquitous of all springtails. I have not yet collected 

 much material in the genera Enfouiobrya, Orchesella, etc., 

 but am able to record O. cincta (L.), O. villosa (Gey.), 

 E. lanuginosa (Nic), E. marginata Tullb., E. nmltifasciafa 

 Tullb., E. nivalis (L.), E. innscornm (Nic), and E. albocincta 

 (Tempi.), from the Northumberland and Durham area. 



Genus SIRA Lubbock 

 Sira buski Lubbock. 



Not uncommon in greenhouses, Winlaton, Newcastle, Kew, 

 and Glasgow. 



Genus CYPHODERUS Nicolet 



Cyphoderus albinos Nic. 



This bustling little blind species is common wherever I 

 have searched for it in the counties of Northumberland and 

 Durham, inhabiting the nests of the smaller ants, Afyr??iica 

 rubra, Lasius niger, L.flavus, and Formica fusca, apparently 

 favouring the runs and burrows of Lasius flavus. 



Genus LEPIDOCYRTUS Bourlet . 



Lepidocyrtus curvicollis Bourlet. 



A very fine though little known insect, of which I possess 

 an example found in a rubbish heap at Winlaton in the autumn 

 of 1908. 



