No. 18 The Oak Fly, Also the Down Head Fly, and Down Hill Fly
This is a land fly, and may be found upon the trunks of trees or on posts near the water. It is carried on the water by the wind, and is consequently used with most success on windy days, like the cow-dung.
Imitation
Body.—Orange floss silk or mohair, ribbed with black silk.
Wings.—The darkest part of the wing-feather of a curlew.
Legs.—A furnace, or red and black hackle.