found recently, although much collecting of Hymenoptera has 
been done by Fullaway, Bridwell, Williams, and others. He 
also remarked that it is possible that some of the introduced 
Hymenoptera do become darker after being in the Islands for 
a period of years, and this is possibly the case also in Cremastus 
hymeniae Viereck., some specimens of which have considerable 
black on the thorax. But it is rather unsafe to generalize on 
the subject as the insects may vary to the same extent in their 
native habitat. 
MARCE 3, 1921. 
The 186th meeting of the Hawaiian Entomological Society 
was held at the H. S. P. A. Experiment Station, with President 
Timberlake presiding. Other members present were Messrs. 
3issell, Ehrhorn, Giffard, Muir, Osborn, Swezey, and Willard. 
Minutes of the previous meeting were read and approved. 
Mr. T. L. Bissell was elected to active membership in the 
Society. 
PAPERS READ. 
“Insects Attacking Ferns in the Hawaiian Islands.” 
BY O. H. SWEZEY. 
“Insect Collecting in Zero Weather in Illinois.” 
BY 0. H. SWEZEY. 
NOTES AND EXHIBITIONS. 

Dermestes vulpinus damaging lead lining of acid-tank. 
Mr. Timberlake exhibited specimens and the work of this 
Dermestid. These were brought in by Mr. C. C. James, man- 
ager of the Pacific Guano and Fertilizer Company. The dam- 
age was done by the larvae, which bored their way between 
the wooden work beneath the tank and the lead lining, in 
preparation of their pupal chambers. In many instances they 
had gnawed grooves in the lead, and had in a few cases per- 
forated the lining so that the tank had to be relined. 
Insects from figs of Ficus retusa at Hongkong, China.— 
Mr. Timberlake exhibited 22 species of chalcid-flies, all reared 
from figs of Ficus retusa collected by Mr. Fullaway at Hong- 
