80 TERTIARY RHYNCHOPHOROUS COLEOPTERA. 
Roan mountains, western Colorado, from the richest beds at summit of 
bluffs overlooking head of East Salt creek. One specimen, No. 157, U.S. 
Geological Survey. Also a third specimen, No. 313, from either the Roan 
mountains or White river, U. S. Geological Survey. 
Subfamily APIONIN 2. 
Since both in Europe and in America the only Tertiary forms of this 
family have been referred to the genus Apion (which contains all but one 
of the numerous forms now existing in America), the reader is referred to 
that genus for the general remarks that might be looked for here. 
APION Herbst. 
A genus enormously rich in species, of small size, distributed all over 
the world, but absent from Australia, and principally found in the northern 
hemisphere. About seventy species are found in North America, and, as 
may be imagined, are widely distributed, the larger number, however, being 
found in the southern half of the country. Half a dozen fossil species have 
been found in Europe, principally in Brunstatt, and as many at Florissant 
alone, while an additional species has been found in the Roan mountain 
beds. It appears, therefore, to be somewhat characteristic in this country 
of the Lacustrine fauna. 
All the species from Florissant and the Roan mountains referred to this 
genus appear to fallin the fourth section of Smith, in his last synopsis 
of the species, and the Florissant species perhaps alse in his group Ventri- 
cosum; but the first species, at least, is very different from any of our modern 
forms in the great length of the head, and in all but one of our fossil species 
the eyes are farther from the margin of the prothorax than is common, and 
the thorax is always more transverse. ‘The same, too, may be said of the 
other fossil species hitherto described from Brunstatt, Oeningen, and Rott, 
by Forster, Heer, and Heyden, six in number, if we separate, as I think we 
must, the species described from Rott and the one from Brunstatt, doubt- 
fully regarded as the same by Forster, 
