vi INTRODUCTION. 
in other publications, bringing the total to 1629. Of these additional species, 50 
belong to Pselaphide, 34 to Histeride, 3 to Phalacride, 3 to Nitidulide, 2 to Trogo- 
sitide, and 1 each to Scydmenide, Silphide, Trichopterygide, Rhysodide, and 
Lathridiide. A list of them is given on pp. 692-696. 
These totals show that the Nitidulide, Histeride, Cucujide, Pselaphide, Trogositide, 
Cryptephagide, and Colydiide are particularly well represented in Central America, 
whereas the Silphide (so numerous in temperate regions) are very limited in number, 
this family having fewer species than the Scaphidiide, Byrrhide, Phalacride, or 
Trichopterygide. 
Of the nineteen uncoloured Plates issued with this Volume, seventeen have been 
printed by Messrs. Bannwarth, of Vienna, and two by Mr. E. Wilson, of Cambridge. 
The original drawings for Plates 1—XV. were made by the eminent artist Baron Max 
Schlereth, some of these being amongst the finest delineations of insects we have as 
yet seen, though the delicacy of his work has, of course, been to a certain extent lost 
in copying on the stone. The drawings for Plates XVI.-XIX. were made by Mr. E. 
Wilson or Miss M. A. Sharp. It had been intended to give yet another Plate (XX.), 
to be partly devoted to figures of the various species of doubtful position; but as this 
part of the work has now been abandoned, the references to Plate XX. in the text of 
the Byrrhide, pp. 677-686, must be erased. 
Ep. 
March 1905. 
