606. p. verisimilide, Branth.
On black ash bark at Billing's bush, Rideau Park, south of Ottawa, Ont., April 19th, 1897. (Macoun)
607. p. scofularis, Nyl.
On rocks, Capstan Island, Labrador; and on stones, Bay of Islands, Newfoundland. (Waghorne)
608. N. laetevirens, Turn. & Borr.
On rocks, St. George Island, Behring Sea, Alaska, June 17th, 1897. (J. M. Macoun) Greenland. (Arct. Man)
609. R. pyrina, Ach.
On stones, Coal River, and on rocks at Meadows, Little Harbour and River Head, Newfoundland. (Waghorne)
610. B. asserculorum, Schrad.
On old wood at L'Anse au Clair, Labrador. (Waghorne.)
6ii. L. intumescens, Floerke.
Parasitic on the thallus of Lecanora sordida; on stones at Chimney Cove, Newfoundland. (Waghorne.)
612. S. Friesii, Flot.
On decaying vegetable matter, St. John Beach, Newfoundland. (Waghorne.)
613. C. lapidicolum, Tayl.
On stones, Chimney Cove, Newfoundland. (Waghorne.)
614. C. exile, Floerke,
On bark, Clark's Brook, Newfoundland. (Waghorne.)