142. MUSCA CONDUCENS, n. s. _Mas._ Cinerea, capite albo, palpis
antennis pedibusque nigris, thorace vittis duabus latis nigris,
abdomine testaceo linea dorsali nigra basi apiceque cinereo-nigris,
alis cinereis.
_Male._ Cinereous; head white; eyes bare; palpi slender, subclavate;
antennæ not reaching the epistoma; thorax with two broad black
stripes; abdomen dull testaceous, cinereous black at the base and
towards the tip, and with a black dorsal line; wings cinereous; veins
black; præbrachial vein forming a rounded and very obtuse angle at
its flexure, slightly curved inward from thence to its tip; discal
transverse vein curved inward, parted by full half its length from the
border, and by a little more than its length from the flexure of the
præbrachial; alulæ cinereous. Length of the body 2-1/2 lines; of the
wings 4-1/2 lines.
143. MUSCA XANTHOMELA, n. s. _Foem._ Nigra, capite albido, abdomine
ochraceo, alis subcinerascentibus, halteribus pallide testaceis.
_Female._ Black; head whitish about the eyes, which are red and
bare; antennæ not reaching the epistoma; abdomen ochraceous, a
little shorter than the thorax; wings slightly greyish; veins black,
testaceous towards the base; præbrachial vein forming an obtuse angle
at the flexure, straight from thence to the border; discal transverse
vein straight, parted by less than its length from the border, and by
more than its length from the flexure of the præbrachial; halteres
pale testaceous. Length of the body 2-1/2 lines; of the wings 4 lines.
144. MUSCA PRÆDICENS, n. s. (Gen. Graptomyza, _Desv._). _Foem._ Nigra,
capite albido-cinereo, palpis antennis pedibusque nigris, thorace
vittis quatuor albido-cinereis, abdomine testaceo maculis nigris, alis
cinereis, halteribus testaceis.
_Female._ Black; head whitish cinereous; frontalia deep black, linear,
with bristles along each side; facialia without bristles; epistoma not
prominent; proboscis and palpi black; antennæ reaching the epistoma,
3rd joint about four times the length of the 2nd; thorax with four
stripes, metathorax and pectus whitish cinereous; abdomen testaceous;
four black spots on each segment excepting the 1st; legs black; wings
cinereous; veins black, testaceous towards the base; præbrachial vein
forming a curve at its flexure, which is very near the border; discal
transverse vein almost straight, parted by little more than half its
length from the border, and by more than its length from the flexure
of the præbrachial; alulæ and halteres testaceous. Length of the body
3-1/2 lines; of the wings 7 lines.
145. MUSCA COLLECTA, n. s. _Mas._ Viridis, cinereo tomentosa, capite
albo antice testaceo, palpis antennisque fulvis, abdomine testaceo
apice viridi linea dorsali nigra, pedibus nigris, tibiis obscure
fulvis, alis cinereis, halteribus testaceis.
_Male._ Green, with cinereous tomentum; head white, testaceous
and rather prominent in front; eyes bare, contiguous; epistoma
slightly prominent; proboscis black; palpi tawny; antennæ tawny,
not near reaching the epistoma, 3rd joint not more than twice the
length of the 2nd; arista simple, more than twice the length of the
3rd joint; abdomen testaceous, green towards the tip, with a black
dorsal line; legs black; tibiæ dark tawny; wings grey; veins black,
testaceous towards the base; præbrachial vein forming a very obtuse
and much-rounded angle at its flexure, from whence it is hardly curved
inward to its tip; discal transverse vein curved outward, parted by
much more than half its length from the border, and by hardly less
than its length from the flexure of the præbrachial; alulæ pale
cinereous with testaceous borders; halteres testaceous. Length of the
body 2-3/4 lines; of the wings 5 lines.