April, 1919 Bulletin of the Brooklyn Entomological Society. Al 
CONCERNING THE SUBSPECIES OF SARCOPHAGA DUX 
THOMSON.* 
By R. R. Parker, Bozeman, Montana. 
The flies of the genus Sarcophaga previously considered to be 
subspecies of S. tuberosa Pandellé must hereafter be known as 
subspecies of S. dux Thomson. The latter was described from 
Hawaii by Thomson in Eugenies Resa (pp. 533-540) in 1870 
but the relationship of the species was only recently discovered 
by Dr. Aldrich while examining Hawaiian material. S. twberosa, 
on the other hand, was described by Pandellé in 1896 (Rev. Ent. 
Franc., Vol. 15, p. 192). The subspecies affected by this change 
are dux, tuberosa, exuberans Pandellé, sarracenoides Aldrich, 
luzonensis (herein described as new), a new species not named 
for reasons stated below, and possibly pedestris Villeneuve (from 
Arabia) and maderensis Schiner (from Madeira). The last two 
species I have not seen and though Dr. Bottcher (Deutsch. Ent. 
Zeitschr., 1912, p. 736 and 1913, pp. 368-369) indicates their 
relationship to “tuberosa,’ yet he gives no positive data that 
would justify their inclusion in the group of subspecies. One 
subspecies is mentioned above as unnamed because of two speci- 
mens, determined by Dr. Bottcher as “ Sarcophaga tuberosa exu- 
berans Pandellé,” and sent to the writer at different times by Dr. 
Bezzi. The first (from Italy) proved to be distinct from what 
has been called exuberans in this country and the writer there- 
upon prepared a manuscript describing our form as shermamni. 
Before this was published the first specimen received was lost in 
the mail and the second on arriving shortly afterwards proved 
to be the same as our form which the writer was describing as 
shermam. Hence it is impossible to know positively which of 
the two forms was exuberans without reference to the type. 
Whichever is not, is new. The chief distinguishing characters of 
these two forms are given in the next paragraphs and for con- 
venience they may be designated as subspecies a and b. 
* Contribution from the Department of Entomology, State College, 
Bozeman, Montana. 
