. The Hydroids of the Scottish National Antarctic Expedition . tum, n. sp. 4. Halecium tenellum, Hinks. Plate II. Nat. size, growing upon a sponge fragment. Stem with hydroclades. Gonangia. Portion of hydroclade with hydrothecae. Nat. size, showing coppinia cluster. Surface of coppinia cluster. Portions of a fascicled and an unfascicled branch, with a creeping polyzoon—Anguinaria spat^ Branch, with hydrothecse, ending in attachment of hydranth within hydrotheca. 1. lA. 2c. 3. 3a. 4. 4a. 4b. Plate magellanica, Hart. ,, ,, Origin of a double hydroc
. The Hydroids of the Scottish National Antarctic Expedition . tum, n. sp. 4. Halecium tenellum, Hinks. Plate II. Nat. size, growing upon a sponge fragment. Stem with hydroclades. Gonangia. Portion of hydroclade with hydrothecae. Nat. size, showing coppinia cluster. Surface of coppinia cluster. Portions of a fascicled and an unfascicled branch, with a creeping polyzoon—Anguinaria spat^ Branch, with hydrothecse, ending in attachment of hydranth within hydrotheca. 1. lA. 2c. 3. 3a. 4. 4a. 4b. Plate magellanica, Hart. ,, ,, Origin of a double hydroclade. Aglaophenia dichotoma (Johns.). Nat. size. „ ,, Corbula. „ „ Hydrothecse. ,, ,, Portion of stem, showing origin of hydroclades. Antennopsis scotise, n. sp. Nat. size, partially encircled by a sponge. „ ,, Hydroclade with hydrothecas. Anten7iularia hartlaiihi, n. sp. Nat. size. ,, „ Hydroclade with hydrothecje. ,, „ Stem showing hexastichous arrangement of hydroclades. Trans. Roy. Soc. Edirf Vol. XLV. Eitchie: Scotia Hydroids. — Plate Jas Ritchie .del, & ErsT^ Edir Trans. Roy, SocEdm; Ritchie: Scotia Hydkoids. — Plate il. Vol. XLV.
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