ON BRITISH HYDRACHNIDS. 257 



mite has been found several times on the Continent. I am very 

 pleased to see it in the English fauna, although it has had to wait 

 "thirty-one years to be recorded. 



11. Arrhenurus forpicatus ISTeum., 1880. 



Epping Forest, 1882. In 1881 Dr. George, not knowing this 

 had been recorded and named by Neuman, the previous year, 

 named this mite A. 'perforatus. Even now Piersig, in Das Tierreich, 

 p. 113, makes a variety of George's specimen and calls it 

 A. forpicatus perforatus George. 



12. Arrhenurus globator Miill., 1776. 



On Barnes Common and several places later (for it is a very 

 common mite), 1868. Ova deposited April 28th, larvae appeared 

 May 15th, 1868. 



13. Arrhenurus integrata Miill, 1776. 

 Wandsworth Common, 1869. 



14. Arrhenurus leuckarti Pier., 1894. 

 Pond near Perivale Church, 1882. 



15. Arrhenurus maculator, Miill., 1776. 

 Epping Forest, 1882. 



16. Arrhenurus mantonensis George, 1903. 

 Wandsworth Common, 1867. 



17. Arrhenurus sinuator Miill., 1776. 

 Kew Gardens, 1881. 



18. Arrhenurus stecki Koen., 1894. 

 Wandsworth Common, 1880. 



19. Arrhenurus truncatellus Miill, 1776. 

 Wandsworth Common, 1869. 



20. Brachypoda versicolor Miill, 1776. 

 Wandsworth Common, 1868. In addition to the slides, 



'Saville-Kent had a good pencil drawling of the $ and a finely 

 coloured one of the ? . 



21. Diplodontus despiciens Miill, 1776. 



Barnes Common, 1868. Pond between Shepherd's Bush and 

 Hammersmith, and Round Pond, Kensington Gardens, in 1869 



