Abstract
MR. NUTTING may be congratulated on the completion of the third part of his great monograph on American Hydroids. He has a generous conception of America, and includes in his list such species as Silicularia hemispherica from S. Tierra del Fuego and S. repens from Kerguelen. It is therefore almost a monograph of the hydroids of the world, and will be regarded as the most important work of reference on the group that has yet been published. Those who are specially interested in Cœlenterata will probably be gratified to find that Mr. Nutting has taken a conservative attitude as regards species, and that, notwithstanding the many temptations to which he has been exposed in the course of his vast labour in this field, he has added very few new species to those already recognised. It is a much easier method—and a particularly attractive one in the preparation of a standard treatise on systematic zoology—to make new species when difficulties arise than to exercise the skill and patience that is required to place doubtful specimens in their proper specific groups, and we may regard it as a sign of Mr. Nutting's knowledge and thoroughness that the list of species is not a longer one.
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H., S. American Hydroids 1 . Nature 96, 80 (1915). https://doi.org/10.1038/096080a0
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DOI: https://doi.org/10.1038/096080a0
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