ue nigris, alis cinereis
basi subluridis venis basi fulvis, alulis testaceo-cinereis. _Var._?
Abdominis apice purpureo.

_Male._ Golden green. Head white in front; antennae and legs black; wings
cinereous, slightly lurid towards the base, veins tawny towards the
base, praebrachial vein curved at the flexure, almost straight from
thence to the tip, discal transverse vein slightly undulating, parted by
full half its length from the border, and by little less than its length
from the flexure of the praebrachial; alulae cinereous with a testaceous
tinge. _Var._? or a distinct species: darker; abdomen purple at the tip.
Length of the body 3 lines; of the wings 6 lines.

101. MUSCA OBTRUSA, n. s. (genus Pyrellia, _Desv._) _Mas et Foem._
Purpureo-cyanea, antennis pedibusque nigris, alis cinereis, alulis
obscurioribus.

Very nearly allied to _M. refixa_ and to _M. perfixa_, but differing
slightly in the veins of the wings. _Male and Female._ Blue, more or
less mingled with purple. Head black, slightly cinereous in front;
antennae and legs black; wings grey, veins black, praebrachial vein
forming an almost angular curve at its flexure, nearly straight from
thence to its tip, discal transverse vein very slightly undulating,
parted by little more than half its length from the border, and by about
its length from the flexure of the praebrachial; alulae dark cinereous.
Length of the body 2-1/2--3 lines; of the wings 5-6 lines.

102. Musca domestica, _Linn._ See Vol. I. p. 128.

103. MUSCA OBSCURATA, n. s. _Foem._ Nigra, subcinerascens, capite
postico albo, thorace vittis quatuor angustis nigris, abdomine
tessellato, alis obscure cinereis apud costam nigricantibus, alulis
testaceo-cinereis.

_Female._ Black, slightly covered with cinereous tomentum. Head white
behind; thorax with four slender black stripes; abdomen distinctly
tessellated with four rows of cinereous reflecting spots; wings very
dark grey, blackish towards the costa, praebrachial vein forming a
somewhat rounded and very slightly obtuse angle at its flexure, hardly
curved inward from thence to its tip, discal transverse vein slightly
undulating, parted by less than half its length from the body, and by
more than half its length from the flexure of the praebrachial; alulae
cinereous, with a testaceous tinge. Length of the body 3-1/2 lines; of
the wings 7 lines.

104. MUSCA PATIENS, n. s. _Foem._ Nigra, cinereo-tomentosa, frontalibus
antennisque piceis, thorace v