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~ 
RHINGIA.—GRAPTOMYZA. 
Head black, with bluish reflexions, with sparse grey dust on the 
occiput, some black hairs at the vertex, and whitish hairs on 
the chin; frons and face entirely bare ; eyes large, entirely brown, 
in contact along a line which is double as long as the vertical 
triangle, with the upper facets much larger than the others ; 
antenne with the two basal j jo‘nts blackish, the third yellow-brown, 
oval, longer than broad, with a long arista, which is vellowish 
towards the base; face strongly shining, without anv vellow 
marking; snout dullish black at the tip, with a dark yellow longi- 
tudinal stripe on each side; peristoma entirely blu'sh black. 
Thorax entirely shining bluish, the humeral and postalar calli 
narrowly reddish; the back is clothed with long erect blac hair, 
the pleure are grey-haired; scutellum like the thorax, deeply 
punctate, eneous on the hind border, ana there with some long 
bristle-like hairs, clothed below with yellowish hair. Syuamule 
dirty whitish, with a long fringe; halteres dark yellowish. Abdo- 
men entirely shining blue, the first segment only being dark reddish 
in the middle below the seutellum : second» with hind border 
broadly dull blackish blue towards the middle ; third similar, but 
less distinct. The hairs on the abdomen are longer at the base 
and dark externally, those on the back erect and pale, but those 
on the dark portion of the second segment black. Legs, including 
the coxe, black, the femora being very narrowly yellow at the 
extreme tip; the four anterior tibie are pale yellow, the hind 
tibie darkened as in the middle and reddish at the tips ; fore tarsi 
less darkened apically, hind tarsi more broadly so; front tarsi with 
a distinct basal stripe; first joint of front and hind tarsi thickened. 
Wings hyaline, with a yellowish-brown tinge; mediastinal cell 
more yellow ; venation typical, but the third vein not so much bent 
downwards at the end and therefore the submarginal cell not so 
much dilated at the tip; vena spuria not so strongly chitinised as 
in the other species. 
Type 3S, from Obuasi, Ashanti, 27. iv.1907, (Dr. W. AL. 
Graham), a single specimen. 
Subfamily Il. VOLUCELLIN &. 
Genus 10. GRAPTOMYZA, Wiedemann (1820) 
Of this very peculiar genus five species only are known from the 
Ethiopian Region—one described by Karsch in 1887, two by Bigot 
in 1882 and 1883, one of which he referred to a new genus called 
Ptilostylomyia, and two by me in 1908. I have given a table for 
the distinction of these species in my paper on Fea’s Syr rphide ; 
but I now think that there are only three distinct species, viz. 
suavissima, Karsch, very different from the others on account of 
its blue abdomen; e7ttigera, Bigot, with its six black abdominal 
stripes; and (riangulifera, Bigot, of which my melanura and 
