' LEMUROIDEA. List 
roid genera (Adapis, Microcherus, &c.) “ formed,” as Zittel 
remarks, ‘‘a very characteristic element of the fauna; they 
are connected with old Tertiary fore-runners, and combine 
features of the existing Lemursand true Apes.” ‘The presence 
of these heat-loving animals in such northern latitudes un- 
doubtedly indicates the existence there of a climate more 
genial at that epoch than now. In the corresponding period 
in North America remains have been less plentifully found ; 
but for the most part the genera are representatives of those of 
the European beds. 
In strata of Oligocene and older Miocene age no Lemuroid 
remains have come to light in Europe, and they are repre- 
sented by only one or two doubtful forms in America. After 
that date they apparently vanished from the New World and 
from the northern portions of the Old. 
Many of these extinct Lemuroids so combine the charac- 
ters of the Zxsectivora and the Ungulata (or hoofed animals), 
with those of their own Sub-order, that it is often extremely 
difficult, even impossible, sometimes, to determine to which 
Order they really belong, owing to a blending of characters 
due to their common origin. The Upper Eocene forms 
present many affinities with the South American Capuchin 
Monkeys (Cedide). Dr. Forsyth Major is of opinion, how- 
ever, that they are more highly, and not (as is generally 
believed) less specialised than those now living, which appear 
to have been the subject of retrogressive development. 
The species to be noticed below are some of the more im- 
portant of those which have been ascertained to belong to the 
present Sub-order. 
No remains assignable with certainty to the families Chiro- 
myide or Tarsiide, have as yet been discovered. The first form 
