IS92.J 
385 
[Scudder. 
more than seven per cent of those of the American ; and on the 
other side, in the Anthonornini which do not exist at all in the 
European Tertiaries but form nearly one fourth of the American 
Tertiary Curculioninae, and in the Barini which comprise nearly 
sixteen per cent of the American Curculioninae and hardly three 
per cent of the European. No such striking differences appear 
in comparing the numerical preponderance of the tribes in the re- 
cent and fossil Curculioninae of North America, the greatest dis- 
parity appearing in the reverse proportions of the Anthonornini 
and the Cryptorhynchini, the former being relatively more than 
twice as important in the Tertiaries as now, the latter more than 
twice as important now as in the Tertiaries, and in the Hylobiini, 
where the fossils, though not numerous, formed ten per cent of 
the total fauna in Tertiary times, while they hold only one fourth 
of that percentage in the existing fauna, a relation again nearly re- 
versed in a group of greater importance in recent times, the Phy- 
tonomini, where the percentage to the whole fauna is now nearly 
three times greater than it was in Tertiary times. In all other 
cases the difference between recent and Tertiary times, where the 
tribe was represented at all, is insignificant. In all these cases 
of distinction between the recent and Tertiary representation, 
excepting only in the Phytonomini, the disparity would have ap- 
peared still greater if the Tertiary Curculioninae of Europe had 
been compared with the recent fauna of North America ; from 
which we may conclude that as far as the Curculioninae are con- 
cerned, the Tertiary fauna of America shows closer relationship 
to the existing American fauna than does the European Tertiary 
fauna. 
To return to the remaining families : — 
The Calandridae were not very well represented in America in 
Tertiary times, their proportion of species to the whole body of 
Rhynchophora standing somewhat below the present proportion. 
One of the existing subfamilies, the Rhininae, represented In 
America to-day by only a single species, is unknown in both the 
European and American Tertiaries, but the other two subfamilies 
occur in each country, and in proportions not greatly differing 
from those now existing, though in both countries the Cossoninae 
appear to stand a littleabove, the Calnndrinae a little below, their 
present numerical importance. The total number of fossil species 
known is sixteen of which the larger portion come from America. 
PROCEEDINGS, B. S. N. H. VOL. XXV. 25 July, 1892. 
