132 ENTOMOLOGICAL SOCIETY 
shades of green will change much more rapidly than others. 
Much seemed to depend on the amount and intensity of the 
heat applied, the slower steadier heat accomplishing the work 
much better than swift heat. The finest quality of white 
sand should be used; this can be procured of dealers in bird 
supplies. 
Who was first responsible for the method seemed to be in 
doubt, as Mr. Titus had used the method previous to his coming 
to Washington and had no idea where he first heard of it. 
Mr. Pratt had stated that he had used this plan for drying 
for several years. 
Dr. Hopkins reported having secured a parasite from the 
egg of this beetle which Dr. Ashmead stated belonged to the 
genus Poropia in the Trichogrammidae. 
Mr. Marlatt spoke of the occurrence this year of brood 
XIII of the seventeen-year cicada in Wisconsin and Northern 
Illinois. Dr. Uhler spoke a few moments on the specimens 
of this cicada in his collection that had been collected in the 
vicinity of Baltimore, and stated that in his collection were 
specimens of the brood of 1785. He called especial attention 
to the variability of the species. 
Mr. Marlatt made a few remarks on the introduction of 
insects by the importers of plants. He called attention to the 
present rapid distribution and introduction of new and rare 
plants from all over the world by the Bureau of Plant Industry, 
and stated that this was becoming more and more noticeably 
a means of distribution of injurious insects. Our common 
injurious insects are doubtless often sent abroad, and although 
at present all importations by this Bureau are inspected at 
Washington, still some insects have already been admitted. 
Pulmnaria psidii had been found some half-dozen times and 
Aspidiotus rossi from India several times on tropical and 
subtropical plants from the country just named. Mr. Titus 
stated that three times during the present year the puparia of the 
Hessian fly has been found in wheat straw used in packing 
shipments of plants to this country from Tunis, Malta, and 
Algeria. With these lots of straw had also come several other 
wheat insects. Mr. Schwarz stated that the first commission 
