Scudder.] 
3T6 
[Jan. 20, 
This brings out in another way the better agreement of the 
European Tertiary fauna with the recent American fauna than in 
shown by the American Tertiary fauna. 
Of the sixty-six old genera to which the fossil species of Rhyn- 
chophora are here referred including one hundred and thirty-six 
of the one hundred and ninety-three species, six may be regarded 
as cosmopolitan or nearly so, fifteen gerontogeic and especially 
European, though often having a few American species among 
them, sixteen as characteristic of the northern hemisphere in 
general, while the remainder are about equally divided between 
those which are predominantly North American and those which 
are tropical American but often extend to our southern borders. 
Of the thirty-one new genera (with fifty-seven species) little can 
be said in this particular, but nearly half of them maybe regarden 
as most closely allied to American and especially tropical Ameri- 
can forms ; so that on the whole the American and especially the 
tropical American type predominates. It should be remarked, 
however, that the resemblance of the fauna to that of temperate 
North America is undoubtedly greater in appearance than in 
reality, and will most probably be changed to some extent when 
the various species here recorded are better known ; for in default 
of characters which if preserved might materially change the 
alleged affinities of the various forms, it has seemed advisable to 
refer most of them to existing genera, and my opportunities for 
examining tropical and subtropical types have been very limited. 
Where characters of real importance exist, the insects generally 
show the prevalence of structural differences, often considerable, 
from modern forms. 
The localities at which the species of Rhynchophora have been 
obtained are but four, if we except a couple of beetles, Otio - 
rhynchites fossilis found at Fossil, Wyoming, and Hylastes squali- 
dens from the Pleistocene beds of Scarboro, Ontario. These four 
localities are Florissant, central Colorado, the crest of the Roan 
Mountains near the head of East Salt Creek in western Colorado, 
the buttes bordering the White River near the Colorado-Utah 
boundary, and Green River City, Wyoming. All of these local- 
ities, except the Roan Mountains, were described in more or less 
detail in my Tertiary Insects of North America. The Roan 
Mountains beds are apparently merely an extension of those 
found on the White River, fifty miles distant, but here confined 
to the very crest of the range. Insects are found at several 
