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1902. TOKREV, H. B., The Hydroida of the Pacific Coast of the North America with especial reference 

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1904. — — , The Hydroids of San Diego Region [Univ. Calif. Public. Zool., vol. II, p. i — 43, 23 fig.). 



1906. TORREY, H. B. et Ann Martin, Sexual dimorphism in Aglaophenia (Univers. Calif. piibl. vol. III, 



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1910, VanhüFFEN, e., Hydroiden der Deutschen Südpolar-Expedition 1901 — 1903 [Deutsche Siidpol. Exp. 

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1908 Warren, E., On a collection of Hydroids mostiy from the Natal Coast [Ann. Natal Gover n. AIus., 

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1900. Weltner, W., Hydroiden von Amboina und Thursday Island [Seinon zool. Forschgsreis. Bd. V, p. 

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