206 
14. decidua, Egger, is distinguished from the rest of this group h 
broad, flat epistomal knob, yellowish .antenna, and whitish fa 
like pubescence on the abdomen in the female, IWe pigra, to w 
it is much allied ; there is one female in the Entomological < 
collection. 
15. vernalis, Fin. I am not sure whether I am right in the detern 
tion of this species, and cannot at all make up my mind as t( 
limits, as it varies exceedingly in the colour of its pubescence 
tibiae, the shape of the abdomen, &c. ; the species, or grou 
species, is distinguished from the others by its smaller size, s 
shining epistoma, dark antenna? with almost bare arista, black 
with the tibiae ranging from almost black to broadly yellow at 1 
ends, and the thickened hind metatarsus. It is common in r 
dows and banks of rivers from May to July. 
16. prcBcox, Ztt., is the smallest species I have seen, and may furthe 
known by its narrow abdomen, bare arista, and yellow legs, ^ 
the femora at the base broadly, and the last joint of the t 
blackish ; there is a pair in Mr. TJnwiu's collection, and a fen 
in that of the Entomological Club. 
Group 111.— Epistoma without my hairs on the disc; eyes hare. 
17. pulchripes, Lw. This is very much like the last species, bul 
much larger, and has the eyes quite bare ; it is readilv known 
its pale legs, with the tarsi principally pale, the antenifc are r 
dish-yellow, very large in the female, and the arista is almost ht 
I believe it is not rare, as I have caught it near Lewes i 
Eichmond. 
18. scutellata, Fin., may be distinguished from any other species by 
very large swollen epistomal knob ; its legs are principally pj 
and its antennae brown. It is the commonest species after var 
bills, occurring on TJonhelliferce in June. 
19. soror, Ztt., resembles the last, and, like it, has the tip of the s( 
tellum yellowish in the female ; it differs in the bright orange-i 
antennae and smaller epistomal knob. There is one female in t 
Entomological Club collection. 
20. imhera, Ztt. This, and the following species, have the legs qu 
black, and, all but the last, have the antennae blackish ; puhera 
distinguished by its bright reddish pubescence V^puhe suhaurec 
Rond.), distinctly though shortly pubescent arista, and yellowis 
hyaline wings. I possess a female captured in the Plashett Woo 
near Lewes. 
