19. SARGUS REPENSANS, n. s. _Mas._ Testaceus, pubescens, vertice
nigro, palpis lanceolatis, arista nigra, tibiis tarsisque posticis
nigris, his albo cinctis, tarsis anterioribus apice nigris, alis
cinereis apices versus nigricantibus.
Allied to S. AURIFER.
_Male._ Testaceous, pubescent. Vertex black. Palpi lanceolate,
extending along two-thirds of the space between the mouth and the
antennæ; arista black. Hind tibiæ and hind tarsi black, the latter
white towards the tips, which are black; anterior tarsi with black
tips. Wings cinereous, blackish towards the tips; veins black,
testaceous at the base. Length of the body 9 lines; of the wings 20
lines.
20. SARGUS REMEANS, n. s. _Foem._ Niger, pubescens, thorace
purpurascente-nigro, vittis duabus lateralibus pectoris disco
tibiisque anterioribus supra sordidè albidis, alis nigricantibus.
_Mas.?_ Antennis piceis, thorace purpurascente-cupreo, pectore livido,
abdominis segmentis albido-marginatis, alis fuscescente, cinereis
extus albido-strigatis.
Allied to S. TENEBRIFER.
_Female._ Black, pubescent. Head wanting. Thorax purplish black, with
a dingy whitish stripe along each side; disk of the pectus dingy
whitish. Anterior tibiæ dingy whitish above. Wings blackish; veins
black; halteres dingy whitish, with blackish knobs. Length of the body
9 lines; of the wings 20 lines.
_Male?_ Black. Head whitish about the mouth. Antennæ piceous. Thorax
purplish cupreous, with a dingy whitish stripe along each side; pectus
livid. Abdomen with two lanceolate apical appendages; hind borders of
the segments whitish. Wings brownish cinereous, with slight whitish
streaks on the exterior areolets. Length of the body 7 lines; of the
wings 16 lines.
21. SARGUS REDHIBENS, n. s. _Foem._ Cyaneus, antennis fulvis, thoracis
lateribus anticis purpurascentibus, abdomine purpureo, pedibus
albidis, tibiis posticis femoribusque nigricante strigatis, alis
cinereis, _Var. β._ Vertice purpureo, thorace viridi.
_Female._ Blue. Antennæ tawny. Thorax purplish on each side in front.
Abdomen purple, much broader than the thorax. Legs whitish; femora
with a blackish streak above towards the tips; hind tibiæ with a
blackish apical streak. Wings cinereous; veins black; stigma blackish.
Halteres tawny. _Var. β._ Vertex purple. Thorax green. Length
of the body 3-1/2-4 lines; of the wings 7-9 lines.
This may be a local variety of _S. metallinus_, but differs from that
species by the dark marks on its hind legs, and by the wing-veins
being black at the base.
22. SARGUS MACTANS, n. s. _Foem._ Cupreo-viridis, abdomine cupreo,
pedibus testaceis, tibiis posticis basi nigris alis cinereis apices
versus obscurioribus.
_Female._ Cupreous green, with cinereous down. Head wanting. Abdomen
cupreous. Legs testaceous; hind tibiæ black for half the length from
the base. Wings cinereous, darker from the discal areolet to the tips;
veins black; stigma brown; halteres testaceous. Length of the body
4-1/2 lines; of the wings 10 lines.
23. SARGUS INACTUS, n. s. _Mas._ Albido-testaceus, vertice nigro,
thoracis disco scutellique apice purpureis, pectore maculis duabus
cupreis, alis cinereis.
_Male._ Whitish testaceous. Vertex black. Disk of the thorax and
scutellum towards the tip purple; pectus with a cupreous spot on each
side. Wings cinereous; veins black; stigma dark brown; discal areolet
shorter than that of the two preceding species. Length of the body 5?
lines; of the wings 10 lines.