legs rather long and slender;
wings blackish, cinereous hindward and at the tips, veins black,
praebrachial vein forming a very obtuse angle at its flexure, from whence
it is almost straight to its tip, discal transverse vein slightly
undulating, parted by much less than its length from the border, and by
a little less than its length from the flexure of the praebrachial; alulae
large, yellowish white; halteres piceous. Length of the body 4? lines;
of the wings 7 lines.

82. MASICERA SOLENNIS, n. s. _Foem._ Nigra, breviuscula,
cinereo-tomentosa, capite albo, frontalibus atris, thorace
quadrivittato, scutelli margine postico ferrugineo, abdomine
subtessellato, alis cinereis.

_Female._ Black, rather short, with cinereous tomentum. Head white, with
white hairs behind and beneath, frontalia deep black, widening towards
the face, facialia without bristles, epistoma not prominent; eyes bare;
antennae almost reaching the epistoma, third joint cinereous, linear,
rounded at the tip, more than four times the length of of the second,
arista slightly stout towards the base, much longer than the third
joint; thorax with four slender black stripes; scutellum ferruginous
along the hind border; abdomen short-conical, with three broad
interrupted cinereous bands; legs rather short; wings grey, veins black,
praebrachial vein forming a slightly obtuse angle at its flexure, from
whence it is almost straight to its tip, discal transverse vein nearly
straight, parted by much less than its length from the border and by a
little less than its length from the flexure of the praebrachial; alulae
cinereous. Length of the body 3 lines; of the wings 5 lines.

83. MASICERA SIMPLEX, n. s. _Foem._ Nigra, capite albo, frontalibus
atris, thorace cinereo-tomentoso quadrivittato, abdomine fasciis
cinereis late interruptis, alis cinereis.

_Female._ Black, with stout bristles. Head white, with white hairs
beneath, frontalia deep black, linear, face oblique, facialia without
bristles, epistoma not prominent; eyes bare; antennae almost reaching the
epistoma, third joint cinereous, linear, rather broad, almost truncated
at the tip, about four times the length of the second, arista slender,
very much longer than the third joint; thorax and pectus with cinereous
tomentum, the former with four slender black stripes; abdomen shining,
subelliptical, a little longer than the thorax, with a widely
interrupted cinereous band on the fore border of each segment; l