10 TERTIARY RHYNCHOPHOROUS COLEOPTERA. 
(4) A very considerable number of genera are extinct, often including 
a number of species. 
(5) Existing genera which are represented in the American Tertiaries 
are mostly American, not infrequently subtropical or tropical American, 
and where found also in the Old World are mostly those which are common 
to the North Temperate zone. A warmer climate than at present is indicated. 
(6) There are no extinct families, but in one instance an extinct sub- 
family with numerous representatives. - 
(7) The Tertiary European fauna is nearer than our own Tertiary 
fauna to the existing American fauna in the relative preponderance of its 
families, subfamilies, and tribes. 
These conclusions are almost identical, word for word,' with those 
reached from a study of the Tertiary Hemiptera of the United States, 
although in that study a far more meager representation of the Gosiute 
fauna was at hand. 
Besides a number of specimens which could not be definitely placed, 
there have been examined in the preparation of this monograph 753 speci- 
mens of Rhynchophora; of which 431 come from Florissant and 320 from 
the Gosiute fauna. 
Three of the plates which accompany this monograph were put upon 
stone many years ago and before a careful study of the material. Conse- 
quently several species appear on them which are not Rhynchophora at all. 
These have all been described, and the descriptions will in due time and 
place be published, but in this volume only the names are given, in the 
Explanation of Plates 1 and m1. 
In the enumeration of the specimens at the end of the specific descrip- 
tions, the numbers of the obverse and reverse of the same specimen are 
always connected by ‘tand” without any intervening comma, and this typo- 
graphical method is employed only in expressing this relation. 
My warm thanks are due to Mr. Samuel Henshaw, of Cambridge, for 
liberal aid with his collection and by his personal knowledge of living forms, 
both of which have been of the greatest service to me. 
' Proce. Bost. Soe, Nat. Hist. Vol. Xxrv, pp. 564-565. 
