2 



order that a type series may be retained by the authors of the 

 reports for themselves, and another for the Smithsonian Museum. 

 If uniques are sent, particular instructions should be given as to 

 the disposition to be made of them. 



Specimens which can now be furnished should be sent at once 

 to the Smithsonian Institution, well packed, through the Adams' 

 Express Co., and a subsequent transmission be made in June, or 

 early in July, so as to embrace the collections of the coming 

 spring. 



Contributors of materials will be supplied with any Smithso- 

 nian publications respecting the several orders, for which speci- 

 mens have been furnished. 



It is hoped that collectors will properly appreciate the im- 

 portance of the object in view, and respond liberally to the fore- 

 going request. 



JOSEPH HENRY, 



Secretary S. I. 



SMiTHSpNiAN Institution, Washington, April 2, 1860. 



