Land and fresh water mollusks / by William H. Dall. Hydroids / C.C. Nutting.

  • William Healey Dall
Date:
[1910]
Catalogue details

Licence: In copyright

Credit: Land and fresh water mollusks / by William H. Dall. Hydroids / C.C. Nutting. Source: Wellcome Collection.

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    [Proc. Wash. Acad. Sci., Vol. Ill, PI. XXII.] Fig. i. Halecium speciosum Nutting. Part of colony, showing hydrophores and gonangia (enlarged). 2. Single hydranth (greatly enlarged). 3. Halecium ornatum Nutting. Part of colony, showing hydrophores (enlarged). 4. Single immature gonangium (enlarged). [208] (226)
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