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Elements of zoölogy a Elements of zoölogy : a textbook elementsofzolo00tenn Year: c1875 Tubularia. m, medusae; ct, coronal ten- tacle; p, proboscis. Campanularia.—The hydro-medusne in the bell-shaped cups drop out and become free medusae similar to Fig. 698. FIG. 698. In the Sertulariana (Fig. 696) and Campanularians, the hydroid has a stem which is covered by a horny sheath, which is formed into few or many bells or cups. In a fertile cup there are hydro-medusae, which at length drop out and become free medusae similar to Tiarop- sis (Fig. 698). In the Siphonophoree the hydroid acalephs exi
Elements of zoölogy a Elements of zoölogy : a textbook elementsofzolo00tenn Year: c1875 Tubularia. m, medusae; ct, coronal ten- tacle; p, proboscis. Campanularia.—The hydro-medusne in the bell-shaped cups drop out and become free medusae similar to Fig. 698. FIG. 698. In the Sertulariana (Fig. 696) and Campanularians, the hydroid has a stem which is covered by a horny sheath, which is formed into few or many bells or cups. In a fertile cup there are hydro-medusae, which at length drop out and become free medusae similar to Tiarop- sis (Fig. 698). In the Siphonophoree the hydroid acalephs exist as free communities, each community being made up of individ- Tiaropsis.
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