274 Mr. C. H. T. Townsend on 
3. 
10. 
Costal half of wings fuscous, without yellow; 
pollen of abdomen divided by a median 
SUMP S> ve. hee menses elnvatniete) << obe «fen aveps 
Nearly all of costal half taken up with 
yellow, leaving but little fuscous; no 
median abdominal stripe dividing the 
Pollen. ee apreeernert ae ae ty. s.. y hi stg 
. Segments four and five each with an inter- 
rupted golden-yellow pollinose fascia, 
third segment without................ 
Segments three, four, and five, and some- 
times also the anal, with such fascia .... 
. Wings with yellow or milky-white; if 
with no white, at least with a distinct 
trace of yellow near costa ............ 
Wings wholly black except inner border, 
without yellow ; abdomen mostly reddish 
yellow, sometimes dark at tip; meso- 
scutum with postsutural golden markings. 
. Wings milky-radiate on a yellow or fuscous 
background (formosa and vars.) ........ 
WinQemrat sous. Ace. oo sess sonnei 
. Wings with a more or less distinct yellow 
patch on costal portion, never approaching 
tip of wing; abdomen reddish yellow, 
with no blackish unless at tip.......... 
Wings yellow on costal portion, nearly 
‘approaching tip, the yellow bordered 
behind by fuscous, which takes up the 
middle of the wing lengthwise; abdomen 
yellow with black on base, continued 
posteriorly in a median stripe.......... 
. Mesoscutum with postsutural golden -pol- 
NiTOSe | TM ATKANS)) 2 chs ois er ayss «'<ccteracoreee ean 
Mesoscutum without such markings ...... 
. Milky radiations of wings very conspicuous 
with the yellow less apparent, abdomen 
rather strongly purplish; hind femora 
strongly ciliate on apical half: robust 
FOL. (7 hale binys= os oie siabaeteesye > > Stu eaeeee 
Wings conspicuously and broadly yellow, 
with the milky radiations less apparent; 
abdomen orange-yellow, more or less 
dark on median line and tip............ 
Wings with the milky radiations on a 
fuscous ground, with little if any yellow; 
hind femora ciliate apically, abdomen 
reddish shading to purplish............ 
Wings with a yellow patch, hind femora 
Diptera 
histrio, 
var. indivisa, var. n. 
histrio, Walk. 
Typical form. 
histrio, 
var. trifasciata, Lw. 
pennipes, 
var. pilipes, Fabr. 
pennipes, Fabr. 
Typical form. 
subalipes, Towns. 
9. 
10. 
Sormosa, 
var. radiata, Lw. 
Sormosa, 
var. znconstans, Wd. 
Sormosa, Wad. 
Typical form, 
