IV. 
original copper-plates of Long’s Expedition, wMcli have been pur- 
chased by Mr. Bailliere. Plate 75 is now for the first time published 
from a copper-plate prepared by Mr. Say. 
All remarks of my own are distinguished by a different sized type, 
and are followed by the letters “ Ed.” 
A large portion of the original manuscript of Mr. Say, and all the 
works containing his conchological writings are deposited in the 
noble library of the Academy of Natural Sciences of Philadelphia, 
in whose collection are still preserved many of the original speci- 
mens from which his descriptions were drawn. 
I leave to abler hands the rectification of the nomenclature of 
Say’s species, demanded alike by priority of publication, the advance- 
ment of the science, and the much greater facilities for studying 
them enjoyed by the American conchologist at the present day. 
W. G. BINNEY. 
Burlington, N. J., June, 1858. 
