A MONOGRAPH 



ON THE SUB-CLASS 



CIRRIPEDIA, 





WITH 



FIGURES OF ALL THE SPECIES. 



BY 



CHARLES DARWIN, F.R.S., E.G.S. 





THE LEPADID^E; 



OR, 



PEDUNCULATED CIRRIPEDES. 



LONDON: 

 PRINTED FOR THE RAY SOCIETY. 



MDCCCLI. 



