Genus Cules\ 
403 
and mid cross-veins almost in a straight line ; posterior cross¬ 
vein distant about its own length ; fringe brown. 
Halteres entirely pale ochraceous. 
Length. —6 to 7 mm. 
I have not seen a 3 , so append a few remarks from Ficalbi. 
£. Palpi with annular yellowish marks on the middle 
joints, brush fuscous with yellow reflections ; proboscis yellowish, 
more or less brown, black at the apex. Thorax dorsally red- 
brown with two faint brown lines, limited with brilliant white 
tomentum ; pleurae generally brownish, speckled yellowish and 
with white patches opposite the coxae ; scutellum yellowish- 
white ; coxae yellowish at the base and beneath, browner 
distally, quite brown above; knees with small yellow spots; 
tibiae brownish, blackish at the ends ; first tarsal joint brownish, 
distally nearly black for some length, with a small, yellowish 
basal ring ; the other joints brown with broad, basal, yellowish 
rings, except the last, which is narrow ; ungues of the fore and 
mid legs unequal, of the hind legs equal and small, all provided 
with a single tooth. Abdomen with yellowish tomentum 
laterally ; dorsally very dark brown with basal yellowish bands 
on the segments, expanding backwards somewhat laterally ; 
forceps very long. 
Total length. —9 mm. (evidently including the proboscis). 
Habitat. —Germany (Meigen) ; Austiua (Schiner); Scan¬ 
dinavia (Zetterstedt); Russia (Gimmerthal); England (Walker, 
Verrall, &c.) ; Italy (Ficalbi) ; Canada (E. M. Walker, at Lake 
Simcoe, Toronto, Ontario) (66) ; and Manitoba (W. I. Spencer) 
(19. 1. 1900) ; India (Giles). 
Time of appearance. —June and onwards in Europe; June 
and July in Canada. 
Observations.— I have found, a single specimen of a 9 only in 
the new collection in the Museum, from Major Yerburgh, taken 
at Ledbury, and one is deposited by myself from Cambridge. The 
description is mainly based on these two specimens, but numerous 
other British examples have been examined in Mr. Verrall’s and 
other collections. The type is in the Jardin des Plantes. 
Meigen’s figure (Syst. Beschr. i. 6, 6) shows the two cross¬ 
veins well in one line : a good character in the species, but I 
have seen specimens in which they seem to be at a very obtuse 
angle, so much so that they look in one line when examined in 
certain directions, at a great angle in another direction. It is 
subject to some variation, but I do not think it can be confused 
