46 LIST OF FLIES. 
the cock pheasant or the brown owl; body copper-colored 
silk, tinged with water-rat’s blue fur ; with a few fibres of 
light coppery mohair, or from the hare’s ear or squirrel. 
50TH.—Dark Dun.—Is in appearance altogether a dark 
dyed fly, almost black. Full length, five-eighths; wings 
better than half an inch, with a horny shine upon them, 
very veiny and much crossed ; when looked through, shew 
the dark veins on a dim brown ground. Head, shoulders, 
legs, and body, dark brown. 
Hatches the beginning of this month, and continues 
through June; after hatching flies about the water in good 
numbers, in the day-time. 
Winged with a dark feather from the moorcock ; brown 
silk for body ; legged with a dark brown hen hackle. 
51st.—Rep Dun.” —Full length, seven-eighths to an inch ; 
length, half an inch to five-eighths ; wings, three quarters 
to seven-eighths ; the top ones above a quarter of an inch 
across the broadest part. Color altugether a light red ambry 
hue and dim transparency ; the upper wings slightly broken 
with faint freckle, lines, and marks; under-wings plain, 
and fold up double; body fleshy, nearly cylindrical, and 
better than half the length, shewing the light side lines. 
They vary in shades and sizes—the spring flies, called musk 
flies from their musky smell, are of a lighter shade. In 
September they are more of a cinnamon hue; some shew 
more freckle and darker ground. 
Wings, slips from the landrail, brown owl, or red dun 
hen ; with coppery or amber silk for body, legged with a 
red dun hen hackle, 
The red dun is the largest, and master fly, of the aquatic 
(31) Another member of the numerous family of the Phyganide ; possibly itis 
represented by the ‘‘ Sedge Fly”’ of Francis, and the “Bank Fly” named in Mr, 
Aldam’s work, My note on Fly 38 applies pretty much the same to this fly in its 
season, 
