Genus Goeldia. 331 
GOELDIA FLUVIATILIS. n. sp. 
6. Head covered with flat grey scales, with dull violet 
reflections, a pale spot in front and paler round the eyes and at 
the sides ; near the nape are some black upright forked scales, 
forming a rough line much as in J. lwnata, Theobald ; palpi about 
one-third the length of the proboscis, completely covered with 
deep violet scales, so that the jointing cannot be seen ; proboscis 
rather short, deep violet and expanded apically; antennae 
verticillate, deep brown, basal joint pale testaceous, with black 
hairs ; second joint testaceous at the base, with brown scales, 
rather swollen ; clypeus grey, nude. 
Thorax deep brown, covered with narrow-curved bronzy 
scales, except on the base of the wings, where they become 
broader, and also in front of the scutellum ; there are also long 
bristles over the roots of the wings ; prothoracic lobes with pale 
grey, almost dull white scales; pleurae testaceous, with grey 
scales ; scutellum densely clothed with broad flat scales with 
violet reflections ; there appear to be two long lateral and two 
small median border-bristles to the mid lobe ; metanotum deep 
black, with a tuft of black chaetae and scales. 
Abdomen testaceous, covered with flat violet scales, brown in 
some lights, the testaceous ground colour shows through the 
scales ; posterior border-bristles minute; venter pale yellowish- 
grey, the last segment bristly, the black bristles extending on to 
the venter. Legs brown, unbanded, with metallic reflections, 
the apex of the hind tibiae swollen and ciliated; on the apical 
half is a white patch on the lower surface spreading unevenly on 
to the upper surface, but not forming a complete band; knee 
spots pale; fore and mid claws rather long, equal and simple ; 
hind small, equal and simple. 
Wings densely clothed ; first sub-marginal cell longer and 
narrower than the second posterior, its base nearer the base 
of the wing, its stem very short, stem of second posterior 
nearly as long as the cell; posterior not quite its own length 
distant behind the mid, the mid-cross vein and the supernumerary 
unite as in Culex; the wings have a pale spot at the base; 
halteres with pale stem and slightly fuscous knob. 
Length.—6 mm. 
@. Head brown, with flat brown scales, a median area of 
flat white ones, and flat white ones at the sides; palpi brown, 
with a few grey scales at the. apex ; proboscis black ; clypeus 
