Ephemeridæ.
Hook 0 or 1.
Wings.—Hackled with a light blue feather from the under coverts of a young Grouse wing, taken before the bird is strong on the wing. (The lighter side of the feather towards the head of the fly.) This feather darkens very rapidly on the live bird from August onwards.
Body.—Primrose yellow silk, No. 3.
Head.—Primrose yellow silk.
Middle of May to middle of July.
15 16 17 18