80 DEPARTMENT OF THE NAVAL SERVICE 
7 GEORGE V; A. 1917 
Dermocarpa prasina, Bornet and Thuret.—On Petrocelis cruenta at Head harbour, 
Campobello island, June 12, 1912. Not previously recorded from Canada. 
Hyella caespitosa, Bornet and Flahault.—Common in dead shells of Mya arenaria 
in the vicinity of St. Andrews. It imparts a yellowish-green colour to the shells. 
This is one of the perforating alge, and in studying it the caleareous matter of the 
shell must be dissolved out with Perenyi’s fluid, which is made up as follows: 10 per 
cent nitric acid—40 ec., ethyl aleohol—380 cc., and 4 per cent aqueous solution of 
chromic acid—30 ce. 
Oscillatoria laetevirens, Crouan.—On old wharf near St. Stephen, at about # flood- 
tide mark, May 138, 1913. 
Oscillatoria nigro-viridis, Thwaites. —In a brackish pool flooded only by the very 
highest tides, at Welchpool, Campobello island, June 17, 1912. This is the first record 
for this species in Canada. 
Spirulina subsalsa, Oersted.—In brackish pool flooded only by highest tides at 
Welchpool, Campobello. On rocks near low tide mark, Leonardville, Deer island. On 
wharf at the Biological Station. These are the first Canadian records. 
Lyngbya aestuarii, Liebman.—In a brackish pool at Welchpool. 
Nodularia harveyana, Thuret.—In lagoon in salt marsh, St. Andrews, June 6, 
1912. This is the first Canadian record. 
Anabaena variabilis, Kuetzing—TIn brackish pool flooded only by highest tides, 
Welchpool, June 17, 1912. Not previously recorded from Canada. 
Calothrix confervicola, Agardh—Common on Cladophora flavescens floating in 
Kitty’s cove, St. Andrews, August 28, 1913. 
Rivularia atra, Roth.—Forming black gelatinous nodules on sandstone conglo- 
merate cliffs at high-water mark in places where the cliffs are moist with dripping fresh. 
water, near the Biological Station. 
2—CHLOROPHYCE. 
Ulothrix flacca, Thuret——Common on rocks, timbers and moorings and on Fucus 
vesciculosus throughout the region. 
Ulothrix implexa, Kuetzing——Common on sandstone rocks at high-tide mark in 
places moistened by dripping fresh water, near the Biological Station. In estuary of a 
small stream flowing into Brandy cove. 
Enteromorpha percursa, J. G. Agardh.—In lagoon in salt marsh near St. Andrews, 
May 11, 1912. On dead twigs, ete., in estuary of a small stream into Brandy cove. 
Enteromorpha crinita, J. G. Agardh.—In lagoon in salt marsh near St. Andrews. 
In estuary of a small stream into Brandy cove. Rolled up in long rope-like masses at 
the edge of Kitty’s cove. Not previously recorded from Canada. 
Enteromorpha compressa subsimplex, J. G. Agardh—In tide-pools at Adam 
island. In tide-pools on the Short Bar, St. Andrews. One of these tide-pools is shown 
in Fig.-1, Plate VIII. 
Enteromorpha minima, Naegeli.—On rock in tide-pool in Chamcook harbour. On 
sandstone rocks at high-tide mark in places where moistened by dripping fresh water, 
in Brandy cove and near Joe’s point. 
