. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. 10 ANTHOMASTUS Alcyonium digitatum. Kiikenthal in his last diagnosis of the genus Anthomasttis says (1910, p. 3): ''Die Autozooide sind vollkommen in Kelche zuriickziehbar"; this is not quite correct, neither quite reconcilable with the diagnosis of the species grandiflorus; in the species diagnosis of AntJiomastus grandiflorus (1910, p. 4) he more correctly says that the polyps are 'ganzhch zuriickziehbar". Broch (1912, p. 31) while simply repeating Kiikenthal's diagnosis (as to
. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. 10 ANTHOMASTUS Alcyonium digitatum. Kiikenthal in his last diagnosis of the genus Anthomasttis says (1910, p. 3): ''Die Autozooide sind vollkommen in Kelche zuriickziehbar"; this is not quite correct, neither quite reconcilable with the diagnosis of the species grandiflorus; in the species diagnosis of AntJiomastus grandiflorus (1910, p. 4) he more correctly says that the polyps are 'ganzhch zuriickziehbar". Broch (1912, p. 31) while simply repeating Kiikenthal's diagnosis (as to this point) in the diagnosis of the species piirpureus says: "Der Polypenkelch ist rudimentar", adding on p. 33 "bisweilen fast voUig verschwunden"; thus if we only take the Uttle word "fast" away, Broch woiJd be quite right. — The zooids may be more or less prominent, as warts, but in some cases they may be extremely difficult to see, the whole surface of the disc between the polj-ps appearing quite smooth (comp. textfig. 4) giving the impression of complete absence of zooids; zooids are nevertheless always present in large numbers, and they are the only carriers of the reproductive organs; the fully formed polyps are always sterile. Whether a zooid after having participated in the production of sperma or eggs — the colonies of Anthomasttis are, as usually in Octactiniarians, dioecious — may grow sterile, and afterwards develop into a polyp, I have not ascertained; only of the fact that the first rudiment of a polyp is not to be discerned from a zooid I have become fully convinced (comp. below).. 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 Danish Ingolf-Expedition (1895-1896); Københavns universitet. Zoologisk museum. Copenhagen H. Hagerup
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Keywords: ., bookcentury1800, bookdecade1890, booksu, booksubjectarcticregions
