1944] Studies on Syrphid Flies 43 
joint reddish brown pollinose, middle and hind tarsi wholly pale 
reddish-brown ; pile of hind tibiae and tarsi and a middle tibiae and 
tarsi wholly pale, of the anterior tibiae and tarsi wholly black 
except upon the ventral medial margin of the former and ven- 
trally upon the basi tarsi. Wings: broadly reddish-brown upon 
the anterior half, as far as the posterior margin of the first basal 
and upon the first posterior cell as far as the posterior margin of 
the first basal and upon the first posterior cell as far as the end of 
the vena spuria. Anterior margin of first posterior cell broadly 
brownish, almost to the apex of the cell. Apical margin of sub- 
marginal cell paler. The costal and second basal cell light brown- 
ish-yellow. Vena spuria especially dark brown. 
Holotype: No. 23798, one male. Nikko, Japan, L. Grissett 
collector, July 19, 1931. 
This specimen I had tentatively determined as T. bombylans 
Fabr. I now believe that it presents specific differences from that 
species. It is characterized by the extensively basally black hind 
femora and the definitely indented and almost interrupted cross 
band of the abdomen and the strongly reddish pile of the thorax 
and abdomen. 
Temnostoma fumosum n. sp. 
Distinct from bombylans Fabr., in the concentration of the 
dark wing color near the middle of the wing. 
Female. Length 14 mm.; wing 12 mm. Head: occiput tumid, 
together with the vertex bare upon the upper part and shining 
black; front shining black, especially polished upon the lower 
half with a short linear stripe of brownish-white pubescence along 
the eye margin that begins a short distance below the ocelli. 
There is a trace of a similar spot in the middle of the front ; it may 
be that the front was originally broadly light brownish pubes- 
cent. Face shining black, strongly concave on the lower portion, 
the bottom of the concavity lying at the tip of the antennae; in 
this specimen it so happens by accident that the antennae are 
folded down and just fit into the concavity. Face covered with a 
very sparse scattered, whitish pubescence and still more sparse, 
pale pile. Cheeks shining black. Antennae large, the first two 
joints shining, brownish-black; the third is much wider than long 
with evenly rounded margins, reddish-brown, silvery pubescent. 
Arista very long and slender, reddish in color. Thorax: moder- 
ately shining black, rather convex with appressed pile which is 
