26 RAPTORIAL BIRDS 
and also preys upon frogs, and occasionally on small 
fresh-water fish. It likewise feeds on various other 
descriptions of insects, as well as on lizards. 
The European Pern, before it has attained its adult 
dress, frequently assumes remarkable and beautiful 
variations of plumage, examples of which, obtained 
in Norfolk, are preserved in our collection of British 
Birds. 
The succeeding genus, Henicopernis, consists of one 
species, the Long-tailed Pern of New Guinea, and 
some of the adjacent islands. It is a bird of very 
great rarity in European collections, and does not 
exist in the British Museum; but there is a fine pair 
in the Norwich collection, which were obtained, one 
in the Island of Mysol, and the other in New Guinea, 
by the celebrated traveller, Mr. Alfred R. Wallace. 
The genus Henicopernis is followed by another 
genus, AZacheramphus, composed of two species, both 
of great rarity, one of which isa native of Malacca, 
the other of Damara Land, where it was discovered 
by the late C. J. Andersson, after whom it was named. 
Only two specimens of this Damara species are known 
to exist in collections, one in the British Museum, the 
other in our collection at Norwich, to which it was 
presented by its discoverer. This last-mentioned 
specimen is the original of the figure of this species 
contained in the “ Transactions” of the Zoological 
Society for 1867. 
Andersson’s Pern is remarkable for the small size of 
