Abstract
I AM glad to find that Mr. Pearcey agrees with me in regarding Neusina Agassizi, Goës, as identical with Stannophyllum zonarium, Hæckel. But with respect to its systematic position I do not as yet see sufficient reason to differ from Prof. Hæckel in regarding it as a sponge, although I have never observed flagellated chambers and cells any more than he. The large masses of foreign bodies always present in this organism offer very serious difficulties in sectionising it, and as long as we are not absolutely certain about its cellular structure we are justified in thinking with Hæckel that general appearance and the presence of oscula, pores, subdermal cavities, horny skeleton, &c., are sufficient to characterise the form as a sponge.
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HANITSCH, R. Foraminifer or Sponge?. Nature 47, 439 (1893). https://doi.org/10.1038/047439c0
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DOI: https://doi.org/10.1038/047439c0
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