. 
them to be regarded as distinct. In nearly every case these 
: “* There are two species of Pleurotomaria still living in the West Indies. — 
118 PALEONTOLOGICAL EVIDENCE OF 
in the end sufficient py rie have been perceived to cause 
— eagage nag ay een ae rail nown Miocene or Eocene 
forms. We may however take what Professor M‘Coy has called 
the “ wifestians Y of our Volutes in the oldest of our Tertiary 
rocks as instances of at least quasi-identity. with well-known . 
Eocene forms ‘of Europe. Some of our fossil Brachiopoda are 
extremely like described species from the Malta ra but we 
have the very best authority, that of Mr. Davidson, for eguring 
them as distinct. Prof. Tate thinks that the Brachiopoda hav 
no affinity with Wes Italian forms, though there is a Similitade 
in some species. He looks upon them as unique in facies. 
aus Unless we estimate this beforehand, we might be , 
d a gln as znd heal age of our cme Tertiar fauna. eine 
need not dwell upon the evidence of our existing fauna, which 
is familiar to every naturalist ; still I may say that it has been 
somewhat overstated. In the marine fauna it is slight; in the 
mene I know of nothing except our possessing some species of 
ese are, however, very distinct from the Secondary ° 
eater ih the Tertiary beds we have three species. Two are 
pase our ott a * trifling particulars (TL. acuticostata, 
