14 journal nt Knt<minliifjy and Zoology 



Campanulariae 



Plumulariidae : Hydranths t^essile, borne in a row on small 

 lateral branches, with nematophores. Gonangia large. 



Plumularia fietacea (Ellis) Lamark. Anim. sans Vert.. 1st 

 ed. 1815. p. 129. Large. Nematophores, 2 above and one below 

 hydranth. Alternate hydrocladia. Not branched. 



On piles under the Pleasure Pier, Long Beach. Calif. Low tide. 

 December 1920. Gonangia ripe, in pairs. 



Plumularia lagenifera Allman. Jour. Linn. Soc. Lond., 1885, 

 XXIX. p. 157, pi. XXVL Very large and stiff. Unbranched. Cor- 

 i)ula not numerous. Station unknown, probably from dredgings at 

 Laguna Beach by Bean. 



Aylaophcnia ^truthionides (Murry) Clark. Trans. Conn. Acad., 

 Ill, 1876, p. 272. Small, abundant on Fucus inshore, at Laguna 

 Beach. With ripe gonangia January, 1921. Hilton. Commonest 

 hydroid. 



Agkiophenia plitma (Linn.) Lamx., Hist. Pol. F'lex. 1816. 



Some very typical specimens of this species were taken from 

 near the end of the pier at Huntington Beach, California. Readily 

 distinguishable by striking contra.st in color of dark .stem and light- 

 er hydrocladia. Rather tall. With corbulae in April, 1921. 



EUCOPIDAE: Colonial, either branched or simple; hydrothecae 

 campanulate, stalked; aperture toothed or not; gonangium large 

 usually in axil of branch, free medusae. 



ObcUa comniissuralis McCr. Gym. Charls. Harb., p. 95. 



High, sparsely branched colonies. Hydranth deeply campan- 

 ulate. Pedicels annulate throughout, alternate. 



On live Mytilus with other hydroids. Long Beach Pier, not 

 rare. December, 1920. 



OhcUa qcnicultttn (Linn.) Schulzc. Nordsee Exped. 1872. j). 

 129. 



An abundant shoi-e form everywhere. On Funis inshore. La- 

 guna Beach, Calif. January, 1921. No gonangia. 



Ohelia gracilis Calkins. Some Hvdroids of Puget Sound, 1899, 

 p. 353. 



Some typical specimens were taken on stems of other hydroids 

 from pier at Huntington Beach, California. No gonangia in April, 

 1921. 



