383 
[Scudder. 
1892.] 
ninae, where two out of the three species come from the Gosiute 
fauiia ; but it is curious to note one exception in that all the species 
of the first tribe of Curculioninae, the Phytonomini, and nearly 
all those of the second, the Hylobiini, also come from the Gosi- 
ute fauna. The other species of the Gosiute fauna are scattered 
here and there, but, all told, they form only one fourth of the 
whole number of species and represent only one sixth of the gen- 
era. 
A few additional remarks may be made of two of the subfam- 
ilies of Curculionidae, — the Alophinae and Curculioninae. 
The Alophinae have a remarkable development among the 
fossils of the American Tertiaries, and nearly all the forms belong 
to extinct types. Four genera with fourteen species are recog- 
nized and the latter, with but three exceptions (of two genera), 
are confined to Florissant ; indeed, the prevalence of the subfam- 
ily may be considered as one of the characteristic features of the 
Lacustrine fauna, for not only are the species relatively numer- 
ous but they are exceptionally abundant in individuals ; of the 
Curculionidae which have fallen under review, about two fifths of 
the specimens belong here. The relative predominance of the sub. 
family may be made more conspicuously apparent by a statement 
of percentages. The proportion of Alophinae to other Curculion- 
idae in the existing North American fauna is in genera about 4.5 per 
cent, in species less than 2 per cent ; while in the American Ter- 
tiary fauna, the relative proportion of genera is 10 percent and 
of species no less than 14 per cent. Whether any similar preva- 
lence of the subfamily in European rocks can be discovered is un- 
certain, but I am inclined to look upon the numerous species of 
Rhynchophora which have been referred to Hipphorinus as be- 
longing here, in which case this could probably be asserted, at least 
to a certain extent. 
The bulk of fossil Curculionidae naturally fall into the subfamily 
Curculioninae, by far the most important in the existing fauna. All 
the larger tribes of the subfamily found to-day in America occur 
in the Tertiary rocks of our West, and besides them two of those 
which are but feebly developed. The European fossils fall into 
the same tribes as the American with the exception that two of 
the American tribes, the Anthonomini and Prionomerini, are ab- 
sent ; but though, singularly enough, the total number of species 
is exactly the same in the two countries, the distribution among 
