256 
A Monograph of Culicidae. 
the posterior border ; ventral ly there is a triangular patch of 
yellow scales on each segment, the apex touching the base of the 
segment, the base of the triangle being parallel with the posterior 
border of the segment; the first segment is entirely yellow scaled 
beneath. 
Legs metallic blue and purple, in some lights almost brown, 
the two last tarsi of the hind legs and the apex of the second 
pure white. Femora on the ventral surface yellowish, in some 
specimens the anterior femora have an apical pale spot, in others 
it is absent, but the mid and hind femora have one almost white 
and then a few yellow scales; tibiae, metatarsi, and tarsi of 
fore and mid legs dark scaled with metallic reflections ; tibiae of 
the hind legs very much swollen apically, densely scaled, meta¬ 
tarsus and first tarsal joint also densely scaled; apex of the 
second and whole of the third and the fourth tarsi pure white ; 
the hind legs are long, and the scales sticking out from the 
joints give them a very thick appearance. Ungues (Fig. 74) 
? 
Fig. 74. 
Janthinosoma musica , Say. 
Female ungues. 
nearly the same size, but of slightly different form, a tooth 
present on each. Wings with a brownish tinge and with brown 
scales ; first sub-marginal cell slightly longer and narrower than 
the second posterior cell, its branches curved, stem about one-half 
less than its length ; stem of second posterior cell not quite as 
long as the cell itself; posterior cross-vein about its own length 
behind the mid cross-vein ; fringe brown. 
Length.—- 5 to 5’5 mm. ; of hind legs 12 mm. 
£ . Antennae dark brown, banded with broad, pale, ver- 
ticillate hairs, brown, basal joint very globular, deep black ; 
proboscis black with steely reflections; palpi very much longer 
than the proboscis, black, with a metallic blue and purple tinge, 
with two pale yellowish bands, one near the base, another about 
a third of the length from the base ; hairs black. 
Ungues of the fore and mid feet unequal, the larger with two 
teeth, the smaller with one tooth ; on the large claw the basal 
Fig. 73. 
Wing of Janthinosoma musica, Say (9 )• 
(X. 9.) 
