53 
Dr. E. V. Wilcox of the U. S. Experiment Station has made 
inquiry regarding the regulations for the shipment of large 
quantities of Bluefields banana suckers, some 120,000 plants. 
These I understand are to come from Central America, and 
are wanted by Mr. Clark, who represents one of the largest 
banana shippmg firms on the mainland. I have decided to 
take this matter up with the Entomologist Committee of the 
Board, as I understand that there was some hitch about the 
first shipment of Bluefields banana plants into the Territory. 
Attached hereto I submit the report of my assistant, Mr. 
H. O. Marsh. 
Very truly yours, 
E. M. Ehrhorn, 
Superintendent of Entomology. 
Honolulu, November 30, 1910. 
Mr. E. M. Ehrhorn, Superintendent of Entomologv, Hono- 
lulu, T. H. 
Sir: — I wish to report that during November I continued 
my studies of truck crop insects and have given especial at- 
tention to the species found infesting cabbage. 
I also have under way a careful study of the alligator pear 
mealy-bug (Psendococcus nipae) which is such a conspicuous 
pest on pears, guavas, banyan, figs and various other plants. 
Fumigation with hydrocyanic-acid gas seems to be a very 
efifective way of controlling this pest, but as this method is 
practically beyond the reach of persons owning but a few 
trees, it is necessary to use some other insecticide which can 
be applied by spra3ang. I have already experimented with 
some half dozen solutions, and, although some of the experi- 
ments have given very promising results, I am not prepared 
to recommend a remedy until I have given the matter further 
study. 
Owing to the lack of available crops, the field work on the 
melon fly (Daciis cnciirhitae) has been practically at a standstill 
during the past month or six weeks. 
My study of the Japanese beetle (Adoretus tenuimaciilatiis) 
has progressed nicely both in the field and insectary. 
In addition to the special lines of work mentioned I have 
spent considerable time in collecting, breeding and mounting 
insects and writing notes and letters and doing other routine 
work about the laboratory. 
Respectfully, 
H. O. Marsh, 
Assistant Entomologist. 
