BERNICE P. BISHOP MUSEUM 
HONOLULU, HAWAII, 
November 26,1923 
Nr. Alexander Wetmore, 
Bureau of Biological Survey, 
Washington , D.G. , 
% 
Dear Dr.Wetmore: 
In working over the Tanager diptera, I found the description 
of a species which is very close to the Hippoboscid which we caught 
of 
on frigate birds, and^which you took specimens to be identified. 
Dr.Spdiser, in the Fauna Hawaiiensis, vol.III,p.87,1901, 
describes Olfers ia acarta . Concerning it he notes that while the 
specimens he describes from Kona, Hawaii were parasites on a species 
•of short-eared owl, he knew the species previously in a specimen 
caught by Prof.Schauinsland on Molokai, parasitic on our fariend 
Atasan aauila 1., which was undescribed. He says it is near Olfersia 
.-Q-- i n .. - * 
pattidilabris Rond, from Mexico. 
■il l i— m ■ MP u'rn n mi u mmmmmmm * . <■■■!— — —— owm—mm 
I have carefully compared our 
paratypes in the Fauna Hawaiiensis 
Tanager specimens with two 
collection and find that while 
very much alike in general form, they differ in some respects. 
The paratypes are decidedly lighter in color than our specimens 
and are cloat&ed with long golden hairs, while our specimens lack 
these, even those never put in$ alcohol. The legs are much darker in 
our specimens and the wings more strongly iniuscated. Our specimens 
are much larger, although the principal difference is in the length 
of the abdomen, which are shriveled up in the paratypes. The 
descriptions is written in long-winded German, but I managed to get 
thru it, and find it substantiated the paratype specimens. 
Please let me know as soon as you settle this species finally, 
as I want to include the fly in my thesis as well as in the report. 
Yours very sincerely, 
&oLwwo B-f. __ 
