124. MUSCA PROSPERA, n. s. (Gen. Silbomyia, _Macq._). _Foem._
Aurato-viridis, capite argenteo, facie palpis antennis pedibusque
nigris, oculis nudis, pectore maculis duabus argenteis, abdomine
spinoso, apice purpureo maculis duabus argenteis, alis nigricantibus
basi et apud costam nigris, alulis albis. _Var. β._ Thoracis
disco cupreo, abdomine subtus cyaneo-purpureo. _Var. γ._
Abdominis disco cupreo, palpis fulvis.
_Female._ Deep golden green, thickly beset with very stout bristles;
head silvery white; vertex green on each side; frontalia piceous,
very broad, with long stout bristles on each side; facialia without
bristles; face black, deeply keeled, the keel partly white; epistoma
slightly prominent; eyes bare; palpi long, subclavate; antennæ almost
reaching the epistoma, 3rd joint full four times the length of the
2nd; pectus with a silvery spot on each side; abdomen elongate-oval, a
little longer than the thorax, with long stout spines hindward, purple
at the tip, where there is a silvery spot on each side; legs black,
very stout; wings blackish, black at the base and along part of the
costa; veins black; præbrachial vein forming a rounded right angle at
its flexure, near which it is curved inward, and is thence straight to
its tip; discal transverse vein undulating, parted by more than half
its length from the border and by less than half its length from the
flexure of the præbrachial; alulæ white. _Var. β._ Disk of the thorax
bright cupreous; abdomen blue and purple beneath, _Var. γ._ Like _Var.
β;_ palpi tawny; disk of the abdomen bright cupreous. Length of the body
7-8 lines; of the wings 12-14 lines.
125. MUSCA DELECTANS, n. s. (n. subg. Isomyia). _Foem._ Cuprea, capite
cinereo lateribus anticis fulvis, palpis fulvis latiusculis, antennis
rufescentibus, scutello aurato, viridi-abdominis fasciis pedibusque
nigris, alis cinereis apud costam nigricantibus apud venas posticas
subluridis, alulis albido-testaceis, halteribus fulvis.
_Female._ Bright cupreous, rather long; head cinereous, tawny and
somewhat produced on each side of the peristoma; frontalia black,
slightly widening towards the face, with a few bristles along each
side; facialia without bristles; epistoma somewhat prominent; eyes
bare; palpi tawny, rather broad; antennæ reddish, not near reaching
the epistoma, 3rd joint about one-third of the length of the 2nd;
scutellum mostly golden green; abdomen nearly oval, broader but hardly
longer than the thorax, with a black band on the hind border of each
segment; legs black; wings grey, blackish along the costa towards the
base, slightly lurid along the hinder veins; veins black; præbrachial
vein forming a slightly obtuse and rounded angle at its flexure, much
curved inward from thence to its tip; discal transverse vein deeply
undulating, parted by more than half its length from the border and by
much more than half its length from the flexure of the præbrachial;
alulæ whitish testaceous; halteres tawny. Length of the body 7 lines;
of the wings 12 lines.
126. MUSCA INGENS. n. s. (Gen. Calliphora, _Desv._). _Foem._
Nigricanti-cyanea, valde setosa, capite albo, palpis antennis
pedibusque nigris, pectore cinereo, abdomine spinoso fasciis tribus
argenteis late interruptis, alis nigricantibus margine postico
cinereo, alulis albidis.
_Female._ Blackish blue, thickly beset with long stout bristles; head
white; frontalia deep black, widening in front, with a few bristles on
each side; facialia beset with bristles, except towards the frontalia;
palpi and antennæ black, the latter reaching the epistoma, 3rd joint
six times the length of the 2nd; pectus and sides of the thorax
cinereous; abdomen a little longer and broader than the thorax, with
spines towards the tip, and with three broadly interrupted silvery
bands; legs black; wings blackish, cinereous along the hind border and
in the disks of the hinder areolets; veins black; præbrachial vein
forming a right and much rounded angle at its flexure, curved inward
beyond, and thence nearly straight to its tip; discal transverse
vein slightly undulating, parted by less than half its length from
the border, and by full half its length from the flexure of the
præbrachial; alulæ whitish. Length of the body 9 lines; of the wings
14 lines.
127. MUSCA PROMITTENS, n. s. (Gen. Ochromyia, _Macq._). _Mas et
Foem._ Fulva, capite albo, palpis testaceis, tibiis supra tarsisque
apice piceis, alis cinereis basi luridis. _Foem._ Abdomine
purpurascenti-cyaneo basi fulvo.
_Male and Female._ Tawny with black bristles; head white; frontalia
piceous, linear, with a few bristles along each side; facialia without
bristles; epistoma rather prominent; eyes bare; palpi testaceous;
antennæ almost reaching the epistoma, 3rd joint four times the length
of the 2nd; abdomen of the female purplish blue, tawny towards the
base, broader but not longer than the thorax; tibiæ above, and tarsi
towards the tips, piceous; wings grey, lurid towards the base; veins
black, tawny towards the base; præbrachial vein forming a right and
much rounded angle at its flexure, much curved inward from thence to
its tip; discal transverse vein undulating, long, parted by more than
half its length from the border, and by less than its length from the
flexure of the præbrachial; alulæ testaceous. Length of the body 4-5
lines; of the wings 8-10 lines.
128. MUSCA FAVILLACEA, n. s. (n. subg. Anisomyia). _Foem._
Fulva, longiuscula, capite antico palpisque testaceis, antennis
cinereo-fulvis, thorace vittis tribus cinereis, abdomine nigra basi
testaceo fasciis tribus argenteo-cinereis, alis cinereis. _Var. β._
Thorace cinereo, abdomine fulvo cinereo-tessellato segmentis nigro
marginatis.
_Female._ Tawny, rather long, with black bristles; head testaceous in
front, whitish and with whitish hairs beneath and hindward; frontalia
extremely broad, with a cinereous line, beset with six bristles along
each side; facialia without bristles; epistoma prominent; eyes bare;
palpi testaceous; antennæ greyish tawny, reaching the epistoma, 3rd
joint four times the length of the 2nd; thorax with three indistinct
cinereous stripes; abdomen black, elongate-oval, a little longer and
broader than the thorax, with a testaceous basal band, and with three
silvery grey bands which are testaceous beneath, ventral segments
wholly testaceous; wings cinereous; veins black, tawny towards the
base; præbrachial vein forming a rounded and obtuse angle at its
flexure, slightly curved inward from thence to its tip; discal
transverse vein slightly undulating, parted by a little more than half
its length from the border, and from the flexure of the præbrachial;
alulæ testaceous. _Var. β._ Thorax cinereous; abdomen tawny,
tessellated with cinereous, hind borders of the segments black. Length
of the body 5-6 lines; of the wings 10-12 lines.