74. DOLICHOPUS CINEREUS, n. s. _Mas._ Cinereus, capite albo, antennis
fulvis, pectore albido, abdomine fasciis æneo-nigris, pedibus testaceis,
tarsis anterioribus apice nigricantibus, tibiis posticis apice tarsisque
posticis nigris, alis cinereis, halteribus testaceis.
_Male._ Cinereous, not metallic; head white between the eyes; antennæ
tawny; 3rd joint elliptical; arista black, much longer than the antennæ;
pectus whitish; abdomen with an æneous black band on each segment; legs
testaceous, stout; anterior tarsi blackish towards the tips; hind tarsi
and tips of hind tibiæ black; wings grey; veins black; præbrachial
vein forming a right angle at its flexure, much curved from thence to
the border; discal transverse vein slightly bent outwards; halteres
testaceous. Length of the body 3 lines; of the wings 5 lines.
75. DOLICHOPUS PRÆDICANS, n. s. _Foem._ Cinereus, capite pectoreque
albis, antennis fulvis, thorace vitta apiceque viridibus, abdomine
maculis lateralibus albis, pedibus testaceis, femoribus posticis nigro
lineatis, alis cinereis basi nigricantibus, halteribus fulvis.
_Female._ Cinereous; head and pectus white; antennæ tawny: arista black,
longer than the antennæ; thorax with a dorsal stripe and the hind part
green; abdomen with white spots along each side; legs testaceous, stout;
tibiæ beset with black spines; tarsi black towards the tips; hind femora
with a black line; wings cinereous, blackish towards the base; veins
black; præbrachial vein gently curved outwards at its flexure, straight
from thence to the border; discal transverse vein straight; halteres
tawny. Length of the body 2-1/2 lines; of the wings 4 lines.
76. DOLICHOPUS PROVECTUS, n. s. _Foem._ Viridis, capite pectoreque
argenteis, antennis nigris latiusculis basi testaceis, thorace vittis
duabus nigris, abdomine fasciis argenteis, pedibus nigris, robustis
spinosis, tibiis testaceis, alis obscure cinereis.
_Female._ Bright green; head in front and pectus silvery white; antennæ
black, rather broad, testaceous towards the base; 3rd joint conical;
arista much longer than the antennæ; thorax with a black stripe on each
side; abdomen with silvery white bands; legs black, stout, spinose;
tibiæ; testaceous; wings dark grey; veins black; præbrachial vein
forming a very obtuse angle at its flexure, straight from thence to the
border; discal transverse vein straight. Length of the body 2-1/2
lines; of the wings 4 lines.
77. DOLICHOPUS PRÆMISSUS, n. s. _Mas._ Obscure viridis, capite
pectoreque cinereis, antennis nigris, abdomine viridescente-nigro,
pedibus nigris vix spinosis, tibiis ferrugineis, alis obscure cinereis,
halteribus fulvis.
_Male._ Approaches the _Psilopi_ in some of its characters. Dark green;
head in front and pectus cinereous; antennæ black, very small and short;
3rd joint conical; arista as long as the breadth of the head; abdomen
greenish black; legs black, hardly spinose or setose; tibiæ ferruginous;
wings dark grey; veins black; præbrachial vein hardly bent between the
straight discal transverse vein and the border; halteres tawny. Length
of the body 2 lines; of the wings 3-1/2 lines.
78. DOLICHOPUS PROVENIENS, n. s. _Foem._ Obscure viridis, capite
albo, antennis nigris thorace vittis duabus pectoreque cinereis,
abdomine cyanescente-viridi fasciis cupreis, pedibus nigris, femoribus
anterioribus apice tibiisque fulvis, alis nigricantibus, halteribus
fulvis.
_Female._ Dark green; head white in front and about the eyes; antennæ
black; 3rd joint round; arista shorter than the breadth of the head;
thorax with two cinereous stripes; pectus cinereous; abdomen bluish
green, with cupreous bands; legs black; tibiæ and tips of anterior
femora tawny; wings blackish; veins black; præbrachial vein quite
straight; discal transverse vein straight, parted by twice its length
from the end of the subanal vein; halteres tawny. Length of the body 2
lines; of the wings 4 lines.
Gen. CHRYSOTUS, _Meigen_.
79. CHRYSOTUS EXACTUS, n. s. _Mas._ Obscure viridis, cinereo-tomentosus,
antennis pedibusque nigris, abdomine obscure cupreo, tibiis anticis
fulvis, alis cinereis.
_Male._ Dark green, with cinereous tomentum; antennæ black; 3rd joint
conical; arista much shorter than the breadth of the head; abdomen
dark-cupreous; legs black; fore tibiæ tawny; wings grey; veins black;
præbrachial vein hardly bent exteriorly; discal transverse vein parted
by more than four times its length from the end of the subanal vein.
Length of the body 1-1/4 line; of the wings 2 lines.
Gen. DIAPHORUS, _Meigen_.