Report of National Museum, 1886. — Riley. 



Plate I. 



u u u 



<£ 



UTJ 



^ 



4- 



4- 



2? 



Vial-holder designed by C. V. Riley, and in use in the Department of Insects. 



a the block ; b, spring wire clamps ; c, beveled ends of block ; d, pointed wire nails. (Lettering on 

 all figures the same.) 



