46. Mycoforum, Nyl

536. M. pycnocarpum, Nyl.

On bark of oak trees at Aylmer, Que.; abundant on young trees of Acer rufrrum in a. swamp above the Central Ontario Junction, Hastings Co., Ont. (Macoun.)

47. Siphula, Fries

537. S. ceratites, Nyl.

Clearwater Lake, northern Labrador, July 21st, 1896. (A. P. Low.) This occurs on islands in Behring Strait. (Wright.) On Attu Island, Behring Sea, Aug. 29th, 1901. (J. M. Macoun)

49. Acolium, De Not

541. A. tigillare, De Not.

Labrador or Newfoundland. (Waghorne fide Eckfeldt.) Arctic America. (Richardson.)

542. A. tympanellum, (Ach.) De Not.

On the old wharf at Hastings, Burrard Inlet, B.C., April 16th, 1889; and on old wharf at Comox, Vancouver Island, June, 1893. (Macoun.)

51. Coniocybe, Ach

556. C - furfuracea, (Linn.) Ach.

On stems of plants, Birchy Cove, and Middle Arm, and on stones, Ballantyne Cove, Newfoundland. (Waghorne.) On the roots of trees, chiefly pine, in the shade at Dow's swamp, near Ottawa, Ont, and on pine roots at Ironsides, Que.; on old stumps in Algonquin Park, Ont., June, 1900. (Macoun.)

53. Staurothele, Norm

562. S. Drummondii, Tuckerm.

On Trenton limestone, at Kingston, Ont. (A. T. Drummond.)

563. S. umbrina, (Wahl.) Tuckerm.

Greenland. (Arct. Man) On limestone rocks, Kingston, Ont. (A. T. Drummond)

54. Segestria, Pries

564. S. majusculum, Nyl.

Labrador or Newfoundland. (Waghorne fide Eckfeidt)

55. Trypethelium, Spreng

565. T. virens, Tuckerm.

Labrador or Newfoundland. (Waghorne fide Eckfeldt.) On trees in Canada. (A. T. Drummond.) At Big Intervale, Margaree,

Cape Breton Island, N. S., 1898; on beech trees at Beechwood and Casselman, near Ottawa, Ont.; near Wooler and at Belleville, Ont. (Macoun) On bark, Rigaud Mountain, Vaudreuil Co., Que. (Rev. G. Ducharme.)

56. Sagedia, Mass

566. S. Cestrensis, Tuckerm.

On bark of maples, Margaree, Cape Breton Island, N.S., July, 1898; on young maples at Ottawa, Ont., May, 1892; on King's Mountain, Chelsea, Que., May, 1897. (Macoun.)

56V. S. oxyspora, (Nyl.) Tuckerm.

Labrador or Newfoundland. (Waghorne fide Eckfeldt.)

568. s. carpinea, Pers.

On bark, St. John's Beach, Newfoundland. (Waghorne.)