44 Bulletin of the Brooklyn Entomological Society. Vol. XIV 
S. dux lugonensis n. subsp.: Asia, Philippine Islands; Av- 
STRALIA, Queensland. 
Subspecies a (exuberans Pandellé).—Occurs in certain coun- 
tries of Europe, and probably in Africa and in the United States 
and Canada. 
S. dux sarracenoides Aldrich: NortH America, United 
States, Canada. 
Subspecies b. Europe, Italy. 
TABLE FOR THE SUBSPECIES OF SARCOPHAGA DUX Thomson. 
v Both eenttaliseaiments sblackye) Sater aeer Wcecs Lien ieee ae 2 
Atleast second cenital scomient dillsonranees. aac cee eee 5 
2. (Cheekiinvestiture: blacls. 2) ik Wyner aatac ales tee cnet s aati de ee ene a 3 
Vestiture of posterior portion of cheek white...................... 4 
3. In profile anterior and posterior edges of tips of forceps prong parallel 
and prong with an apical tooth (Fig. 2, 8)......... harpax Pandelle. 
Forceps more slender in profile, anterior edge near tip gently sinuate 
(Dye ame cP 10) NPRM Ie AcI cena anSnAnel eae RO Ela eo) tuberosa Pandelle. 
4. One row of black cilia behind eyes, forceps prong as in tuberosa (Fig. 
PAN EOTEDI) i atime aN gt Gore ga ark aeerma CT ya, MARAE SE lo DO dux Thomson. 
Two rows of black cilia behing eyes, in profile forceps prong blunt, 
stout and with apical, posterior tooth (Fig. 1, 7)..lusonensis n. subsp. 
5. Vestiture of posterior portion of cheek white, two rows of black cilia 
behind wey.es SEMIS Opie are ters as aera esl cepa t aa ean OS subspecies 0. 
Cheek vestiture black, three rows of black cilia behind eyes......... 6 
6. Both genital segments dull orange, forceps approximately as in harpax 
(CES SAN) insets Gee tee eer cia Nee eR ON sarracenoides Aldrich. 
First genital segment usually wholly brown, sometimes partly brownish, 
rarely without some brown coloration; forceps edges not parallel, 
in profile anterior edge sinuate near tip (Fig. 6, 13)..... subspecies a. 
The figures of the forceps and genitalia should be used in con- 
junction with the above table. There is considerable difference 
in the form of the anterior portion of the penis, though the dif- 
ferences are due to variations in a fundamentally similar struc- 
ture in each case. It is not wise to place reliance in apparent 
differences, however, because bending and folding of the delicate 
edges frequently results in anything but the normal appearance. 
The writer has in his records several unpublished notes con- 
cerning the habits of three of these flies which are included. 
