(606.) D. obtusulum, Kindb. (n. sp.)

D. Novā-Brunsviciae, Canadian Musci, No. 534.

Tufts dusky-green or olivaceous. Stems flaccid, subpinnate; branches short. Leaves falcate, from the broader sub-oblong base gradually narrowed to the sublinfiar-lanceolate, obtuse or rarely subacute acumen, carinate, denticulate to or below the middle, sub-de-current; upper cells oblong-lanceolate, the other narrower, sub-linear, the basal rufescent but otherwise scarcely distinct, the alar longer and narrower; costa vanishing below the apex. Perigonial leaves nerveless, ovate-oblong, acute. Perichetial leaves lanceolate, obtusate and convolute. Capsule sub-cylindric, shortly emerging from the side of the perichetium. Dioecious.

This species has the habit of Dichelyma falcatum; and is the D. falcatum of Prof. Fowler's New Brunswick list.

Collected in still water, Bass River, N.B. (Fowler's Cat.)

(607.) D. uncinatum, Mitt.; Lesq. & James, Mosses of N.America, 273; Canadian Musci, No. 234.

On twigs in ponds at McLeod's Lake, lat. 55°; also abundant on trees at the mouth of Pass Creek, near Sproat, B.C. (Macoun.)

(608.) D. capillaceum, Bruch & Schimp.; Lesq. & James, Mosses of N. America, 273; Canadian Musci, No. 431.

Fontinalis capillacea, Druram. Musc Bor. - Am., No. 234.

Grand Lake and Newcastle, N.B. (Fowler's Cat.) On sticks in brooks, Canaan Forks, Queen's Co., N.B. (J. Moser.) On the roots of trees, bordering the rivulet at Holland Landing (Ontario). (Drum-mond.)

Var. elongatum,Kindb. (n. var.)

Stems more elongate, branches more distant, the leaf-base longer than the excurrent part of the costa.

In the bed of a small brook, 30 miles north of Michipicotin River, Lake Superior, July 27th, 1869. (Macoun.)

(609.) D. pallescens, Bruch & Schimp.; Lesq. & James, Mosses of N. America, 274; Canadian Musci, No. 235.

Dead wood, River Rouge, Argenteuil Co., Que. (D' Urban.) Abundant on the bases of trees in the inundated woods at the mouth of the Gatineau, near Hull, Que.; also on twigs in water-holes near St. Patrick's Bridge, Ottawa. (Macoun.) On bases of trees, Bass River and Fredericton, N.B. (Fowler's Cat.) Tay, York Co., N.B. (J. Moser.)

(610.) D. cylindricarpum, Aust.; Lesq. & James, Mosses of N. America, 274.

On damp rocks in the Coast Range above Yale, B.C., May 17th, 1875. (Macoun.) The specimens gathered here were the same as those sent to Austin by Mrs. Boy and labelled Cascade Mountains.