Xxxil YORKSHIRE—VERTEBRATE FAUNA. 
summer visitant. The four Seals are all species which from their 
rarity in England cannot be expected to occur; and most of the 
nine cetaceans can only be looked for as rare stragglers. But it 
is somewhat surprising that the Common Dolphin, which inhabits 
the south coast of England in more or less numbers, should not 
have been recorded as visiting the Yorkshire seas. 
Comparisons of the mammalian fauna of Yorkshire with those 
of other districts for which lists have been published, show that 
the chief differences are in the bats and the marine forms. The 
terrestrial species, being nearly all of universal range in Britain, 
are present in all the lists. As the value of comparisons lies in 
their bearing upon questions of geographical distribution, it is 
interesting to find that the Dormouse is absent from the Norfolk 
fauna, and that, although present in Yorkshire and in Northum- 
berland, its range does not extend into Scotland. That of four 
of the Yorkshire bats also—the Noctule, the Hairy-armed, Reddish- 
grey, and Whiskered Bats—falls short of Scotland, although the 
two latter are found in Northumberland and Durham. It is but 
of little use to pursue the comparison so far as regards the Seals 
and cetaceans, which usually rank as stragglers in all lists. 
Regarding the extinct species, little need be said. The forms 
included in Mr. Harting’s work on ‘ Extinct British Animals’ are 
ali that it is desirable to enumerate in such a work as this, being 
the only species which have survived in Britain to within the 
historic period, and whose former existence can be proved by 
other than paleontological evidence. Of these the Reindeer has 
never in historic times occurred south of Caithness: the evidence 
of the Beaver’s existence in Yorkshire is entirely etymological, and 
that of the Brown Bear as entirely palzontological; while the 
former presence of the Wild Boar and the Wolf is attested by 
strong, reliable, and concurrent testimony. 
The chief work which remains to be done for the Yorkshire 
terrestrial mammalia is to ascertain more completely the distribu- 
tion—and especially the altitudinal range—of the smaller species, 
notably the Shrews, Mice, and Voles. The Lesser Shrew, 
Harvest Mouse, and Red Field-Vole, though all recorded, are 
scarcely known, and much overlooked. 
