to ill tlic previous volumes, aiul also to mimerous recent donations, 

 of which tliose made hy the Lords of the Admiralty, Dr. Jayakar, 

 W. 1). Gumming, Esq., and Captain Mochler Ferryman should be 

 specially mentioned. The Twceddale Collection contained nearly 

 the whole of the materials described in Dr. 8harpe's Monograph of 

 the AJcedinida'. 



ALBERT GUNTHEll, 



Keeper of the Department of Zooloiji/. 

 British Museum (N. H.), 

 June 1, 1892. 



