DIPTERA. 403 - 
base to near the tip where it again widens ; sixth white, feathered, yellow 
at the base, much longer than the third: chest with three yellow stripes ; 
a slightly oblique yellow band on each side of the chest which is tinged 
with white: abdomen obconical, not longer than the chest, yellow beneath 
and along each side: legs tawny ; thighs armed with little black spines 
towards the tips beneath; fore-thighs, fore-shanks and hind-shanks with a 
black spot towards the tips; feet darker than the shanks; fore-shanks 
black, yellow towards the base: wings gray, brown along the fore border ; 
veins pitchy; lower cross-vein straight, slightly oblique ; cross-veins be- 
tween the fifth and sixth and between the sixth and seventh veins in one 
line, straight, upright, rather long: halteres yellow. Length of the body 
3—3} lines; of the wings 6—7 lines. 
Amazon River. 
Genus HETEROMYZA, Fallen. 
Hereromyza ROBUSTA, Mas. 
Fulwa, cinereo-tomentosa; caput nigro maculatum; antenne testacee, 
articulo 30 nigro maculato; thorax cano trivittatus, scutelli apice 
pectorisque maculis duabus albis; pedes flavi, femoribus tibiisque 
piceo bifasciatis ; ale subcineree, e guttis fuscis sex-vittate. 
Tawny, with a cinereous covering: crown with a lanceolate tawny 
stripe; a black spot round the eyelets and one on each side; face short ; 
epistoma prominent; peristoma broad, slightly prominent: mouth pitchy ; 
palpi tawny: feelers testaceous; third joint with a black spot above, longer 
and much deeper than the second; sixth extremely slender, black towards 
the tip, full four times the length of the third: chest with three hoary 
stripes ; tip of the scutcheon white: breast with a yellowish white spot on 
each side; abdomen obconical, a little shorter than the chest: legs yellow; 
thighs and shanks with two pitchy bands; fore-thighs and hind-thighs 
stout: wings slightly gray, with six rows of brown spots and dots ; veins 
black, tawny at the base ; lower cross-vein very oblique, very slightly bent 
outward near its tip: halteres yellow. Length of the body 2 lines; of 
the wings 5 lines. 
Van Dieman’s Land. 
