32 
NOVEMBER 3d, 1921. 
The 193d meeting of the Hawaiian Entomological Society 
was held at the experiment station of the Ht. 9S, P. A. Presi- 
dent Timberlake presiding. Other members attending were 
Messrs. Bissell, Bryan, Crawford, Ehrhorn, Fullaway, Giffard, 
Illingworth, Muir, Soon, Swezey, Whitney and Willard. 
The minutes of the last meeting were approved as read. 
A communication from Mr. E. K. Taylor of Alameda, Cal., 
was read, in which he stated that favorable action had been 
taken by the State Department at Washington in the matter 
of issuing passports which would enable Mr. Albert Koebele 
to return immediately to the United States. 
PAPER READ. 
“An Interesting New Derbid Genus (Homoptera).” 
BY F. MUIR. 
NOTES AND EXHIBITIONS. 
Stigmaeus floridanus—Mr, Ehrhorn exhibited a pineapple 
sucker showing this mite, commonly called the Florida pine- 
apple mite, and stated that a fortnight ago a severe outbreak 
of it was reported in the Moanalua section of Oahu. It was 
thought at that time to be new to the islands, but after investi- 
gation, it was found that in 1908 Mr. Van Dine reported it 
on pineapple plants in the grounds of the U. S. Experiment 
Station, and that the record had been either forgotten or over- 
looked. 
Mr. Ehrhorn exhibited also three earwigs found feeding 
on woolly aphis at Waiki, Parker Ranch, Hawaii. He stated 
that woolly aphis, feeding on apple trees there, had been de- 
stroyed by some enemy, and took some of the twigs with the 
aphis in a tin can to his office. Upon opening the can, he 
found the aphis had been destroyed and found the three ear- 
wigs on the galls of the apple twig. The earwigs were pre- 
sented to the Hawaiian Entomological Society. 
Zorapteron on Kauat.—Mr. Swezey exhibited a slide mount 
of a minute insect, which he had collected in a rotten log at 
Kokee, Kauai, August 20, 1921. Mr. Muir had cleared and 
mounted it, and endeavored to determine it. It appeared to 
