Mr. J. W. Shoebotham^s Notes on Collembola. 433 



10. Genus Chondrachobtjtes, Walilgr. 



[The genus Chondrachorutes of Walilgren Las 

 not been previously recorded from the British 

 Isies, but it nevertheless occurs there, for I took 

 specimens at Berhhamsted, Herts, in 1910, but 

 have not yet described them.] 



Tribe A c h o R u t i n i, C. B. 



11. Genus Achorutes, Tempi., C. B. 



= Keanura, MacG. 



III. Family Onychiuridae (Lbk,, C. B.). 



12. Genus Onychiueus, Gerv., C. B. 



13. Genus Peotaphoruka, Absln., C. B. 



14. Genus Tullbeegia, Lbk. 



Section ENTOMOBRYOMOEPHA, C. B. 

 I^^ Family Isotomidae (Schffr., C. B.). 

 Subfamily IsoTOMLX^, Schffi-. 



15. Genus Isotoma, Bourl., C. B. 



16. Genus Agrenia, C. B. 



17. Genus Peoisotoma, O.B. 



17 a. Genus ? Aechisotoma, Linnaniemi. 



[Linnaniemi has proposed the genus Archi- 

 sotoma for the reception of Froisotoma besseUsi 

 (=P. spitzberffetiensis, Lbk.), but as I have neither 

 my specimens of bessel/si nor Linnaniemi's descrip- 

 tion by me at the moment, I cannot say whether 

 it should be regarded as a separate genus or as a 

 subgenus oi Proisotoma.^ 



18. Genus Anurophorus, Nic. 



19. Genus Folsomia, Willem. 



20. Genus Teteacanthella, Schtt. 



21. Genus Isotomodes, Axels-Linn. 



22. Genus Isotomurus, C. B. 



23. Genus Oncopodura, Carl & Lebed. 



Subfamily Actaletin^, 0. B. 



[The subfamily Actaletina is not represented in the 

 British Isles.] 



