. Contributions to Canadian biology. Marine biology; Natural history. HYDR0ID8 OF EASTERN CANADA L79 No. 105. Cladocarpus pourtalesi (after Nutting). Cladocarpus pourtalesi Verrill. Trophosome. Stem fascicled, branched, the anterior tube bearing the hydrocladia; hydrocladia closely approximated, alternate, divided into regular, short internodes, each with three or four septal ridges; hydrothecae closely approximated, broader towards mar- gin; margin entire; intrathecal ridge short, curved sharply upward; supracalycine and mesial nematophores stout, cauline nematophores numerous. (
. Contributions to Canadian biology. Marine biology; Natural history. HYDR0ID8 OF EASTERN CANADA L79 No. 105. Cladocarpus pourtalesi (after Nutting). Cladocarpus pourtalesi Verrill. Trophosome. Stem fascicled, branched, the anterior tube bearing the hydrocladia; hydrocladia closely approximated, alternate, divided into regular, short internodes, each with three or four septal ridges; hydrothecae closely approximated, broader towards mar- gin; margin entire; intrathecal ridge short, curved sharply upward; supracalycine and mesial nematophores stout, cauline nematophores numerous. (From Nut- ting's descript^'on.) Gonosome. " Gonangia oblong-ovate, with lunate, sub-terminal aperture, borne on an unbranched phylac- togonium springing from the side of the base of the proximal hydrotheca of the hydrocladium; there are from one to fi.^e gonangia to each phylactogonium" (Nutting). Cladocarpus speciosus Verrill. Trophosome. Stem fascicled, distal portion simple, divided into long internodes, each with a hydrocladium from near the middle; hydrocladial internodes witli seven septal ridges; hydrothecae short, widening from base to mai'gin; margin with two rounded anterior teeth and four or five shallow teeth on each side; intra- thecal ridge low, straight, horizontal; supracalyc'ne nematophores and mesial, with crenulated margin, cauline nematophores four to each internode. (From Nutting's description.) Gonosome. " Gonangia not known, phylactogonia branched, arising from the side of the proximal hydro- thecae and not morphologically a modified mesial nema- tophore, the latter being present" (Nutting). No. 106. Cladocai-pus speciosus (after Nutting). Genus Pluhularia. Trophosome. Hydrocladia unbranched, pinnately arranged, each having more than one hydrotheca; hydrothecae with entire margin; all nematophores movable. Gonosome Gonangia without extra protection. Plum'ularia setaceoides Bale. Trophosome. Stem simple, unbranched, divided into regular
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