4 THE ZOOLOGIST. 
and is, therefore, liable to be shot over the sea by fishermen and 
others. An excellent account of this species, as observed there 
by Capt. H. W. Feilden, will be found in ‘The Zoologist’ for 
1872. 
The Arctic, or, as I prefer to call it, to avoid any ambiguity, 
Richardson's Skua, is tolerably abundant in several of the Shet- 
land Islands, but the easiest breeding-place to visit is that on the 
Island of Noss, near Lerwick, the capital of Mainland. No one 
is allowed even to land on Noss without a written permission from 
the owner, who lives on|the Island of Bressay, and this permit 
has to be given up to the shepherd, so that the birds are in 
no danger of persecution, except from egg collectors. There 
must be quite fifty pairs on Noss, and I succeeded in examining 
many examples of the young in all stages, from the down to those 
full-fledged and ready to fly, without, I am happy to say, being 
under the necessity of depriving them of life by turning them 
into specimens. Mere amassing not being my object, it was only 
necessary to sit down and describe each individual from life, but 
the deductions from these observations must be reserved for 
my monograph. In the adult the dark forms were in the 
majority; but there was a fair proportion of the white-breasted 
ones, and the two varieties pair freely, as has already been 
recorded by other observers. 
With regard to the vernacular name of this species, the term 
Richardson’s Skua, although originally bestowed on the dark 
variety, has been applied to no other species, and is, therefore, 
preferable to that of Arctic Skua, which has sometimes been used 
for the Long-tailed or Buffon’s Skua. The scientific name of 
Stercorarius parasiticus (Linn.), was most clearly intended for the 
latter, the description being unusually precise. Linneus, in 
his ‘Fauna Suecica,’ p. 55, and also in ‘ Syst. Nat.’, p. 226, says of 
Larus parasiticus, “rectricibus duabus longissimis,” which can 
only apply to the Long-tailed or Buffon’s Skua; and there are 
other points for which the reader may be referred to ‘ Proceedings 
of Zoological Society’ for 1876, p. 327. The earliest and proper 
name for Richardson’s Skua is Stercorarius crepidatus (Gm., 
ex. Banks and Latham). 
I can add nothing respecting the breeding of the Fulmar 
Petrel in Foula, already recorded in these pages, and I did not 
see the Manx Shearwater on many occasions, nor the Storm 
