420 Mr. G. H. Verrall’s Notes on Syrphide 
Abdomen longer than the head (without antenne), thorax and 
scutellum together, and constricted about the second and third seg- 
ments ; the second and third segments are almost all yellow, but the 
second segment has a black dorsal line and hindmargin, while the 
third segment has only a black hindmargin (except the extreme 
margin which is whitish), and a slightly darkened dorsal line ; the 
fourth segment widens out and is mostly shining blackish and 
bearing tiny black bristles ; the sides of the first segment and the 
basal corners of the fourth segment are yellowish ; the end of the 
fourth segment is dark brownish-red, but the extreme hindmargin 
is whitish ; the sides of the second segment bear at the base the 
usual remarkable fringe of white hairs, and all the other pubescence 
is very short andinconspicuous. Genitalia shining dark brownish- 
red, and bearing very soft whitish pubescence. 
Legs mainly dark orange on the anterior pairs, but black on the 
hind pair ; anterior coxe blackish, glossed with whitish grey ; middle 
femora slightly darkened beneath, and with a short fine whitish 
ciliation behind ; hind legs nearly all shining black, but the coxe 
are glossed with whitish dust, and the legs are dark reddish on the 
trochanters, the extreme base of the femora, a band just after the 
middle of the femora which is scarcely extended to the upper side, 
the extreme base and a tolerably obvious band just after the middle 
of the tibiz ; beyond which the tips of the tibiee and the base of the 
tarsi are indistinctly red, and in fact the tibie are altogether 
slightly tinged with reddish ; the hind coxe bear a slight whitish 
pubescence beneath ; the hind femora are considerably dilated on 
the apical half, and bear two rows of spines besides the short 
serration beneath, there being about eight regular spines behind 
and about five in front on this thick apical half ; hind tibiz much 
curved ; tarsi widely flattened, even to the tip. 
Wings very pellucid ; pale yellow about the base, the subcostal 
cell, and the stigma. Squame whitish with white fringes. Halteres 
pale orange. 
2. Face and frons whitish ; vertex shining black ; frons rather 
narrow on the upper part, and often with an indefinite rubbed 
dark crossband just above the middle, and it bears inconspicuous 
short white pubescence ; the facets on the front of the eyes are not 
dilated. Abdomen broader than in the male and not constricted ; 
the sides of the first segment are whitish-yellow, the second and 
third segments bear at the basal corners large yellowish triangular 
spots which leave little more black than a broad hindmargin and a 
less defined dorsal line, and on the third segment:a narrow grey 
hindmargin ; the fourth segment is more brownish, with small 
whitish-grey spots at the basal corners, and with a whitish-grey 
