TUBULAKIAD.E. 



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FAMILY I. TUBULARIAD^E. 



Clava (Gmelin). Naked, fleshy; tentacles scat- 

 tered, thread-like ; mouth terminal, naked. 

 C. multicornis. Fig. 23 ; l. 



Hydractinia (Van Beneden). Naked, fleshy, 

 gregarious, many united on a common crust -like 

 base; tentacles in one circle, thread-like; egg- 

 germs sessile, clustered on untentacled individuals. 



H. echinata. Fig. 24 ; 2_o. 

 ? littoralis. 

 ? _ ? (Johnston's Zooph. 2d Ed. p. 463.) 



Myriothela (Sars) = Spadix (Gosse). Naked, 

 solitary, club-shaped, extensile, crowded with short 



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