543. C. phseocephalum, (Turn.) Turn. & Barr.

On bark of trees, Canada. (A. T. Drumrnond.) On bark of dead spruce, Hector, Rocky Mountains; on bark of Douglas Fir, Comox, Vancouver Island. (Macoun.)

544. C. lenticulare, (Hoffm.) Ach.

On decaying wood in Canada. (A. T. Drummond.)

545. c. subtile, Fr.

Labrador or Newfoundland. (Waghorne fide Eckfeldt) On dead wood, Arctic America. (Richardson.) On rotten wood, Bass River, Kent Co., N.B. (Prof. Fowler.) On dead wood at Ottawa, Ont. (Macoun.) On bark at Laggan, Rocky Mountains. (Bean.)

546. c. fuscipes, Tuckerm.

On dead wood, London, Ont. (A. T. Drumond.)

547. c. trichiale, Ach.

On dead spruce logs, Gaspé coast, Que.; on dead cedar logs, Nipigon River, Ont. (Macoun)

548. C. roscidum, Flozrke.

On dead wood, Arctic America. (Richardson)

549. c. turbinatum, Pers.

Labrador or Newfoundland. (Waghorne fide Eckfeldt.) Parasitical on Pertusaria; Canada. (A. T. Drummond.) On the slofes of Mount Albert, Gaspé Co., Que. Macoun.)

550. C. hyprellum, Ach.

On the inner bark of conifers, Halfway Point, Newfoundland. (Waghorne.) On bark of Douglas fir, on Sea's farm, near Victoria, Vancouver Island, May 6th, 1893. (Macoun.)

551. C. trabinellum, Schl.

On dead wood, Halfway Point, Newfoundland. (Waghorne.)

552. C. salieinum, Pers.

On dead wood, Siles Point, Halfway Point, Birchy Cove and on bark at Deer Lake, Newfoundland. (Waghorne.)

553. C. minutum, Koerb.

On old boards at Goose Arm, and on boards and dead wood at Ballantyne Cove, Newfoundland. Waghorne.)

554. C. pusillum. Floerke.

On dead wood, St. John's Beach, Newfoundland. (Waghorne.) On old rails near Aylmer, Que., May 22nd, 1897. (Macoun.)

555. C. parietinum, Ach.

On mossy wood Sandy Point, Bay of St. George and Siles Point, Newfoundland. (Waghorne.)