462 Transactions. 
Abdomen black in ground-colour with cinereous tomentum ; posterior 
margin of each segment with delicate bristles. Genitalia of male lying 
forward on abdomen (fig. 62) ; female abdomen ending in pair of blackish- 
brown stylets. 
d 9. Length, 3 mm. 
- Plesiotype : No. 1087, D. M. А 
Habitat.—Throughout New Zealand. Frequently seen on calm evenings 
dancing in swarms above bushes. Ee 
H. nigra n. sp. 
d. Eyes dichoptic, deeply emarginate, posterior margin slightly con- 
cave; front moderately wide, sides almost parallel, black, but in certam 
lights there is a broad silvery-grey orbital stripe on each side, leaving a 
narrow black medio-longitudinal one ; at other times the whole front is 
silvery grey; a row of delicate frontal bristles on each side near orbits ; 
ocellar triangle black; ocellar bristles distinct. Antennae large for size 
2 
i 
E 
А 
vs 
of head, inserted at about middle line; black, with greyish-brown reflection; ‘og 
minutely pubescent ; first and second joints bristly, third long and clavate ; 
style short and ending in small spine-like process. Face short, shorter 
than front, ‘convex, with a few scattered delicate bristles. Proboscis 
blackish-brown ; apical joint of palpi orange yellow to pale yellow, basal 
blackish-brown. Occiput black, with greyish reflection, convex (par- 
ticularly above where the bristles are distinct along the orbits alone), 2 
though somewhat depressed behind ocellar triangle ; chaetotaxy co 
es. 
to row of orbital bristl 
Thorax black, with greyish and brownish reflections on dorsum and 
Wings iridescent, veins yellow, Sc evanescent before reaching costa; 
anal angle distinct but not prominent; halteres pale tawn 
L | ‘= у. Ace 
egs tawny, tarsi and apices of tibiae fuscous ; a row of conspicuous 
à ise legs 
EP e ^ dream abdomen, laterally compressed (fig. 64). 
Holotype: No. 12 
bi à 
24. D. M. Po 
-—Otira (J. W. Campbell), Ohau Valley ; frequenting the foliage 
of bushes overhanging streams. Usually met with while beating. 
Genus Empis Linn. 
Metapleurae with hairs or bristles : Ки = 
: : : ; proboscis as long as or long UE 
head-height ; third antennal joint more or less оонай aiid clavate ; face ay 
bare ; vein Sc evanescent before reaching costa, 
TABLE оғ ӨРЕСТЕЗ. 
An altogether cinereous species ; length of ¢, 
8 mm. 
ouni. 
A blackish-grey species ; length of ¢ 
5:5 mm. 
, s. 
br 3 
ч otakauens —— 
