ngs grey, black along the costa, praebrachial
vein forming a right angle at its flexure, near which it is slightly
curved inward, and is thence straight to its tip, discal transverse vein
undulating, parted by more than half its length from the border and from
the flexure of the praebrachial; alulae white. Length of the body 4-1/2
lines; of the wings 8 lines.

98. MUSCA MACULARIS, n. s. (genus Chrysomyia? _Desv._) _Mas et Foem._
Aureo-viridis, capite argenteo antice aurato frontalibus atris, antennis
pedibusque nigris, thorace vittis tribus cupreis vix conspicuis,
scutello cyaneo, pectore maculis quatuor lateralibus albo tomentosis,
abdomine viridi-cyaneo maculis quatuor lateralibus albis, alis cinereis
basi nigricantibus, alulis nigricantibus.

_Male and Female._ Golden green. Head brightly gilded, white behind;
antennae, tibiae, and tarsi black; thorax with three indistinct cupreous
stripes; scutellum blue; pectus with two white tomentose spots on each
side; abdomen greenish blue with two transverse white spots on each
side; femora blackish-green; wings grey, blackish at the base,
praebrachial vein forming a slightly obtuse angle at its flexure, nearly
straight from thence to its tip, discal transverse vein curved outward
towards its fore end, parted by about half its length from the border,
and by much less than its length from the flexure of the praebrachial;
alulae blackish. _Female._ Head with a silvery white vertex, frontalia
deep black, linear. Length of the body 56 lines; of the wings 10-12
lines.

99. MUSCA MARGINIFERA, n. s. (genus Lucilia, _Desv._) _Foem._
Viridi-cyanea, capite albido frontalibus atris, antennis pedibusque
nigris, abdominis segmentis purpureo marginatis, alis cinereis basi
subnigricantibus, alulis cinereis.

_Female._ Greenish-blue. Head whitish, frontalia deep black, linear,
face and third joint of the antennae cinereous; abdomen with a purple
band on the hind border of each segment; legs black; wings grey, almost
blackish at the base, praebrachial vein forming a hardly obtuse angle at
its flexure, between which and its tip it is hardly curved inward,
discal transverse vein nearly straight, parted by about half its length
from the border, and by more than half its length from the flexure of
the praebrachial; alulae cinereous. Length of the body 4-1/2 lines; of the
wings 9 lines.

100. MUSCA BENEDICTA, n. s. (genus Pyrellia, _Desv._) _Mas._
Aureo-viridis, capite albo, antennis pedibusq