. Contributions to Canadian biology. Marine biology; Natural history. HTDROIDS OF EASTER?^ CANADA 171 rosacea (Linnaeus). Trophosome. Colony delicate; branching irregu- lar; hydrothecae opposite, long and slender, Avith at least the distal third free; margin sinuous. Gonosome. Male gonangium long and slender, with tubular neck; female gonangium larger, pyriform, distally terminating in two long and six shorter, pointed lobes, the shorter ones curved to the centre; an internal marsupium No. 81. Diiihasia rosacea. Diphasia tamarisca (Linna-us). Trophosome. Stem, branches and
. Contributions to Canadian biology. Marine biology; Natural history. HTDROIDS OF EASTER?^ CANADA 171 rosacea (Linnaeus). Trophosome. Colony delicate; branching irregu- lar; hydrothecae opposite, long and slender, Avith at least the distal third free; margin sinuous. Gonosome. Male gonangium long and slender, with tubular neck; female gonangium larger, pyriform, distally terminating in two long and six shorter, pointed lobes, the shorter ones curved to the centre; an internal marsupium No. 81. Diiihasia rosacea. Diphasia tamarisca (Linna-us). Trophosome. Stem, branches and hydrotheciP very stovit; hydrothecae sub-opposite, nearly one-half free; three low elevations are present on the margin. Gonosome. Gonangia both male and female wit^^ one diameter greater than the other, obovate, spiny, the female with lobes forming coarse serrations as well, the two distal lobes mixch elongated. Genus Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Biological Board of Canada; Canada. Marine Biological Station. Toronto, Biological Board of Canada
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