1871.) 201 
4. Syrphus venustus, Meigen : Walker says of this, “ generally distribu- 
ted,” but I purposely omitted it from my list, as I could not find 
it in any collection; I have since seen a specimen (4) in Mr. N. 
Cooke’s collection, and which I believe is of this species. 
5. Syrphus cinctus, Fallen: Walker says of this also, “ generally distri- 
buted,” but all I could find were cinctellus, Zett.; I believe I have 
since seen the true cinctus in Mr. Marshall’s collection, but in bad 
condition, so that I feel some doubt about it. 
6. Melanostoma barbifrons, Fallen: Mr. B. Cooke possesses this species, 
and sent me two males to name. 
7. Platychirus melanopsis, Loew; 8. P. scambus, Zett.; 9. P. angusta- 
tus, Zett.; and 10. P. podagratus, Zett.; I recorded in the num- 
ber of this Magazine for last November. 
11. Chilosia nebulosa (n. sp.): tota flavo-hirta; oculis hirtis; episto- 
mate nudo, descendente ; antennis rufo-flavis, apice fuscis, seta 
nuda; scutello pilis nullis nigris; pedibus luteis, femoribus fere 
ad apicem, tarsisque apice, nigris (tibiis annulo obscuro ¢); alis 
nebulosis (long. 8—4 lin., alar. exp. 8 lin.) ¢ 2. 
This species comes at the end of the group containing grossa, &c. Its nearest 
ally seems to be pictipennis of Egger, which, however, is considerably larger (5—d54 
lines), and on the abdomen of the male of which the two basal segments are clothed 
with abundant pale yellow hairs, but the rest with deep black hairs. Egger also 
describes the tarsi as brown in the male and dark yellow in the female ; whereas in 
nebulosa the pubescence is all reddish-yellow, and the tarsi of the male are luteous, 
the two last joints and the hind meta-tarsus being rather obscure; in the female 
the four basal joints of the tarsi are reddish-yellow, the fourth joint of the hind pair 
being rather obscure. Egger also speaks of the wing in pictipennis as being spotted 
rather than clouded. The female of pictipennis has the two basal segments of the 
abdomen dark metallic-green, the others shining black, while in nebulosa the abdo- 
men of the female is all shining blackish. The other characters of the male of 
this species are as follows: the epistoma is black, not very shining, with but little 
tomentum, except in the hollow beneath the antennw; the eye-margins are 
sharply defined, rather broad, with a distinct fringe of pale hairs; in profile the 
front is inflated, the epistoma very slightly hollowed beneath the antennz, then 
rather gradually produced to a small knob, the upper and lower angles of the 
mouth being almost equally produced; the cheeks are rather large, greyish-yellow ; 
the lower part of the back of the head is rather inflated and clothed with deep yel- 
low hairs; the vertex and front are clothed with abundant, rather long, yellow hairs, 
the front having also considerable tomentum on the sides and a faint middle 
channel; the antenne are blackish at the base, the third joint moderately large, 
rounded, reddish-yellow, with the tip brown, arista pitchy, bare, thickened at 
the base; thorax and scutellum shining zeneous, thickly and regularly punctate, 
