Laminaria Phyllitis, Stack. Harvey's Manual. P. 31. On rocks near low water. This plant is not found in the Ner. Bor.-Am. Our specimen exactly corresponds with the description of the Manual; but Dr. Greville, Mrs. Griffiths, and Dr. Harvey doubt whether this beautiful plant may claim to rank as a species distinct from L. saccharina. "The more lanceolate form, delicate substance, and pale yellowish-green colour, constitute the chief marks of distinction."

Laminaria digitata, Lam. P. 94. Abundant as far south as Cape Cod.

Agarum Turneri, Post. & Rupr. P. 95, pl. V. On rocks below low water mark, Rimouski, South Shore. This plant

is peculiar to the Atlantic and Pacific Shores of America. Its common name is Sea-Colander.

Chorda filum, Stack. P. 98. Murray Bay. A young specimen clothed with beautiful pellucid grass-green hairs— common on the Northern Shores of America.

Chorda lomentaria, Lyngb. P. 98. On rocks at mid-tide. This plant is not easily distinguishable from Asperococcus echinatus. "In habit it has more resemblance to it than to C. filum; but the structure of the walls is more in accordance with the latter, and it may always be known by its constricted joints."

Order IV.-DICTYOTACE.

Dictyosiphon faniculaceus, Grev. P. 114. On rocks at low water mark. "In a growing state every branch is clothed with long slender pellucid-jointed hairs, which give the plant, when seen under water, a beautiful feathery character."-Harv.

Punctaria tenuissima, Grev. P. 115. Parasitic on other Algæ.

Punctaria plantaginea, Grev. P. 115. On rocks and stones. Asperococcus echinatus, Grev. P. 117. A plant nearly allied in appearance to C. lomentaria.

Asperococcus compressus, Griff. Harvey's Manual, p. 42. Murray Bay. This plant is not included in Harvey's

Ner. Bor.-Am.; but it exactly corresponds with the description in the Manual, and does not very much resemble A. echinatus. After careful consideration, we are disposed to add it to the American species.

Order V.-CHORDARIACEÆ.

Chordaria flagelliformis, Ag. P. 123. In rock pools midtide, Murray Bay. This is a remarkably prolific and robust specimen. Its branches are from 6 to 8 inches long.

Chordaria divaricata, Ag. P. 124, pl. XI A. In rock pools mid-tide, Murray Bay. This is also a remarkably fine specimen. It has shrunk greatly in drying.

Elachista fucicola, Frics. P. 131, pl. XI B. Parasitic on Fuci and Chordariæ. Metis.

Order VI.-ECTOCARPACEÆ.

Ectocarpus brachiatus, Harv. P. 138. Parasitic on Fucus vesiculosus. Murray Bay. Also in the collection of

Mr. D. A. Poe from Metis.

Ectocarpus littoralis, Lyngb., p. 139.

Abundant on Fucus

vesiculosus. Murray Bay and St. Nicholas.

Ectocarpus siliculosus, Lyngb. P. 139. On stones and other Alga at low water mark. Murray Bay; very abundant and the specimens are very fine.

Ectocarpus fasciculatus, Harv. P. 141. Parasitic on Chordaria. We are doubtful about this species. The specimen is so infested with Diatomacea, that it is very difficult to discover the fructification; but so far as it is discoverable, it has all the appearance of this species.

Sub-Class.-II. RHODOSPERMEÆ OR RED ALGÆ.

Order I-RHODOMELACEÆ.

Odonthalia dentata Lyngb. P. 14. In great abundance at Bernaby Island, Rimouski, and frequently found at Murray Bay.

Odonthalia angustifolia, Suhr. P. 14. Abundant at Murray Bay. This is a very beautiful plant. It is not described in the Ner. Bor.-Am. Harvey only says of it

that seemingly it is the same as 0. Kamtchatica Rupr. In appearance it is very distinct from the previous species. It may, we think, be added without hesitation to the North American Algæ.

Rhodomela subfusca, Ag. P. 26. On stones in sandy bays Point des Monts, North Shore, This is an exceedingly variable

and on other Algæ.

Rimouski and Metis.

plant, the young fronds spring from the terminations of the old, and in summer give it a very bushy appearance. In its winter garb and in its old state, it is very scrubby and rigid in its branches

Rhodomela lycopodioides, Linn. Harv. Man. p. 78. The collector notes regarding this plant that "though common every where it is found in greatest beauty and size-in large bushy fronds of more than a foot and a half in length-at Murray Bay. Some pieces of iron removed from a wreck at Caribou Island were perfectly covered with this Alga." Although Harvey does not include this species in his Ner. Bor.-Am., we cannot doubt its identity with the British species of the name. Its peculiarly graceful branches and the monoliform character of its ultimate pinna, which are covered with tetraspores, distinguish it sufficiently from L. subfusca. It has no conceptacles.

Rhodomela gracilis, Kutz. P. 26, pl. XIII. C. This plant is remarkable for its fine pedicellate conceptacles. There is also an entire absence of tetraspores or stichidia. The branching is exceedingly graceful, approaching in appearance to that of R. lycopodioides.

Polysiphonia urceolata, Grev. P. 32.
Algae below low water mark.
Polysiphonia formosa, Suhr. P. 33.

and Metis.

On stones and other Murray Bay and Metis. Murray Bay, Rimouski

Polysiphonia fibrillosa, Grev. P. 43. On stones below low water mark, Point des Monts.

Polysiphonia violacea, Grev. P. 44. On other Algae below low water mark, Murray Bay.

Polysiphonia fastigiata, Grev. P. 54. Parasitical on F.

nodosus. Metis and Point des Monts. The collector

remarks, "This plant makes its appearance first at Metis.

I have seen it in such abundance at Nahant that the sight of it here made me feel as if at the ocean side. The plant here is smaller."

Polysiphonia variegata, Ag. P. 45. Metis. In the collection of Mr. D. A. Poe.

Polysiphonia nigrescens, Grev. P. 49. In shallow rock pools,

Metis.

Polysiphonia nigrescens, var. fucoides, Grev. On stones and other Algæ, Point des Monts.

Polysiphonia nigrescens, var. affinis, Grev. Parasitical on Laminaria, Rimouski.

Order III-CORALLINACEA.

Corallina officinalis, Linn. P. 83. On stones and shells abundant. Order IV-SPHEROCOCCOIDEA.

Delesseria sinuosa, Lam. P. 93. On rocks, Murray Bay. An exceedingly variable plant. "In deep waters the frond often becomes very narrow with filiform lobes produced into long tendrils. The margin of the frond which in most cases is merely denticulate, is occasionally bordered with slender simple or fimbricated lacinulæ, or fringed with great numbers of minute accessory frondlets." Harv. The fringed and narrow varieties are very common in the St. Lawrenee. The collector notes regarding this plant, that "it is the only species of this genus I have found elsewhere than at Murray Bay. This place is the garden of the St. Lawrence." Delesseria fimbriata, De la Pyl. P. 94. Parasitical on Chatomorpha. Murray Bay. Newfoundland is the only other locality noted by Harvey who does not appear to have seen the plant. It is one of the most beautiful and curious of the genus. The lacinia are densely fringed with delicate twisted leaflets.

Delesseria denticulata, Mont. P. 94. Parasitical on Chatomorpha. Murray Bay, Shores of Labrador and Brandy Pot Island. The fronds are alternately branched.

Delesseria alata, Lam. P. 95. North shore of the St. Lawrence, collected by Mr. D. A. Poe. This seems a doubtful specimen, very like D. fimbriata, but its leaflets are shorter and entire on the margin. A narrower and more distinct specimen from Kakoona is in my collection.

Delesseria angustissima, Griff. P. 95. It is doubtful whether this be not a very extreme variety of the preceeding. Murray Bay. Collected

Delesseria Hypoglossum, Lam. P. 96.

by Miss Taylor.

Nitophyllum punctatum, Grev. P. 104. Mingan Islands. Co!lected by George Barnston, Esq.

Nitophyllum Bonnemaisoni, Ag. Harv. Man. p. 117. Mingan Islands. Collected by George Barnston, Esq. This

species is not in the Ner. Bor.-Am., and is new to the American shores.

Order V.-GELIDIACEÆ.

Hypnea musciformis, Lam. P. 123. Point des Monts.
Order X.-RHODYMENIACEÆ.

Rhodymenia pertusa, J. Ag. P. 147. North shore. Harvey gives also the Straits of St. Juan de Fuca and Greenland. Our specimens are not more than 4-6 inches long. In the more northern seas this plant attains the size of from 1-3 feet.

Rhodymenia palmata, Grev. P. 148. Regarding this fine plant the collector notes that it is "common on the south shore and Murray Bay, but not a trace of it is to be found so far north as St. Nicholas and Point des Monts."

Cordylecladia irregularis, Harv. P. 156. This plant seems to be very abundant on both shores of the St. Lawrence, but we are somewhat doubtful as to our determination. Both in structure and external appearance it approximates to the description of this species by Harvey. It is a pretty red plant and is remarkable for the secund character of its ultimate ramuli.

Order XI.-CRYPTONEMIACEÆ.

Phyllophora Brodici, J. Ag. P. 164. In rock pools near low water mark, Murray Bay.

Phyllophora membranifolia, J. Ag. P. 165. Murray Bay. Cystoclonium purpurascens, Kutz. P. 170. Collected at Gaspé by Mr. Bell, of the Canada Geological Survey. Found also at Murray Bay. This plant is readily recognized by the nodose swellings in the ramuli. "It is common