antennae blackish; thorax with seven whitish stripes, the middle one
broad, the inner pair very slender, the second pair broad, the third
pair lateral; abdomen bluish green, slightly varied with purple, base
and fore part of the disk tawny; legs blackish; femora testaceous, with
black tips; wings nearly limpid, with a slight lurid tinge in the discal
areolet, blackish along the costa, and with a blackish oblique streak
which extends from the costa along the praebrachial transverse vein; a
blackish dot on the hind end of the discal transverse vein; veins black,
discal transverse vein parted by about one-fourth of its length from the
border, and by a little more than its length from the praebrachial
transverse which is very oblique; alulae white; halteres testaceous, with
black knobs. Length of the body 5 lines; of the wings 9 lines.

124. LAMPROGASTER SCUTELLARIS, n. s. _Mas._ Subcinereo-nigra; oculis
albido submarginatis; thorace vittis tribus cinereis, vittis duabus
lateralibus, scutelli subquadrati margine, tibiis intermediis tarsisque
albidis; alis nigricantibus, fasciis duabus integris duabusque
macularibus incompletis albidis.

_Male._ Black, with a slight cinereous tinge; eyes partly bordered with
whitish; third joint of the antennae elongate-conical; arista plumose,
the bristles few; thorax with three indistinct cinereous stripes, and
with two whitish lateral stripes; scutellum nearly quadrate, with a
whitish border; middle tibiae, knees and tarsi whitish, the latter with
black tips; wings blackish, whitish at the base, and with four whitish
bands, first and third bands entire, second and fourth macular, very
irregular and incomplete; veins black; discal transverse vein straight,
parted by about one-fourth of its length from the border, and by hardly
more than its length from the praebrachial transverse. Length of the body
2 lines; of the wings 4 lines.

This species has some resemblance to the genus _Platystoma_, and differs
rather from the characters of _Lamprogaster_; it and the two following
species, which are still more aberrant, will probably be considered as
three new genera.

125. LAMPROGASTER CELYPHOIDES, n. s. _Mas et Foem._ Atra, nitens,
brevis, lata; capite, antennis pedibusque testaceis; abdomine
nigro-cyaneo; alis limpidis, strigis transversis subcostalibus
fuscescentibus.

_Male and Female._ Deep black, shining, short, broad. Head testaceous,
face transverse; antennae testaceous, third joint e