DIPTERA. 233 
near the base with longer pale tawny hairs, adorned with five tawny bands ; 
the first on the first segment, interrupted ; the second and the third on the 
second segment, the second interrupted, hind border of the third concave and 
notched; the fourth and fifth on the third segment, hind border of the 
fourth concave, fifth arched and interrupted ; hind borders of the segments 
brassy: legs pitchy, partly tawny ; feet clothed beneath with tawny down; 
claws tawny with black tips: wings gray, dark brown along the fore border, 
brownish in the disk; wing-ribs pitchy; veins black; poisers yellow. 
Length of the body 43 lines; of the wings 8 lines. 
Brazil. 
SyrpHus cotzatus, Mas. 
Viridis, capite flavo, scutelli maryine postico fulvo, abdomine cyaneo-piceo 
maculis octo flavis ornato, antennis pedibusque piceis, femoribus apice 
tibirsque basi fulvis, alis limpidis. 
Head yellow, thinly clothed with black hairs, steel blue and most thickly 
clothed with black hairs above the feelers, tinged with whitish colour and 
clothed with pale yellow hairs behind: eyes dark red: feelers pitchy: chest 
and breast metallic green: chest clothed with tawny hairs; scutcheon 
pitchy, tinged with green ; hind border tawny: breast with a hoary cover- 
ing and clothed with hoary hairs: abdomen pitchy, spindle-shaped, much 
longer but not broader than the chest, shining with steel blue lustre, adorned 
with four pairs of yellow spots, the first pair triangular, the second and third 
larger, conical towards each other, the fourth very small, near the tip: legs 
pitchy ; thighs towards the tips and shanks towards the base tawny: wings 
colourless ; wing-ribs tawny; veins black, tawny at the base; poisers 
tawny. Length of the body 4 lines; of the wings 8 lines. 
Van Diemen’s Land. 
Syrrwus Expositus, Fem. 
Aineo-viridis, abdomine cyaneo-piceo fasciis duabus latis interruptis fla- 
vis ornato, antennis ferrugineis, pedibus piceis, tibiis fulvis, alis 
limpidis, * 
Brassy green: crown blue ; face with a slight tawny covering, thinly 
clothed with black hairs; a black shining tubercle near the epistoma: eyes 
red: feelers ferruginous : chest clothed with tawny hairs: breast tinged 
