MONOGEAPH -^^-^ 



COLLEMBOLA AND THYSANURA. 



Sm JOHN LUBBOCK, Bart., M.P., 



VICE-PRESIDENT OF THE EOYAL SOCIETY; VICE-PRESIDENT OE THE BRITISH 



ASSOCIATION; VICE-CHANCELLOR OF THE UNIVERSITY OF LONDON; 



FELLOW OF THE LINNEAN, GEOLOGICAL, AND OTHER 



LEARNED SOCIETIES. 



LONDON: 

 PRINTED FOR THE RAY SOCIETY. 



MDCCCLXXIII. 



