[171] THE HYDROIDS 189 



CAMPANULARIA. 



Tropkosome. — Colony unhranchcd or regularly branched ; stem 

 simple or fascicled ; hydrotheca; campanulate, never completely ses- 

 sile nor with operculum. 



Gonosome. — Gonophores producing phmuhe without the interven- 

 tion of medusse. 



CAMPANULARIA VERTICILLATA (Linn.) 



Sertularia verticillata Linn., Syst. Nat., loth ed., p. Sii, 1758. 

 Campamdaria verticillata Sars, Bidrag til Kundskaben cm Norges Hydroider, 



p. 46, 1873. — Verrill, Preliminary check-list of Marine Invertebrates 



of Atlantic Coast, p. i6, 1879. 



Distributio7i. — Kadiak, Alaska (llarriman Exped.) ; North Cape, 

 Norway (Sars) ; New England Coast (Verrill). 



CAMPANULARIA DENTICULATA Clark. 



Campanularia denticidaia Clark, Proc. Acad. Nat. Sciences, Philadelphia, 

 p. 213, 1876. 



Distribution. — Orca, Alaska (Harriman Exped.); Port Etches, 

 Alaska (Clark). 



CAMPANULARIA LINEATA Nutting. 



Campamdaria lineala Nutting, Hydroida from Alaska and Puget Sound, 

 Proc. U. S. Nat. Mus., Vol. xxi, p. 744, 1899. 



Distribution. — Berg Inlet, Glacier Bay, Alaska (Harriman Ex- 

 ped.) ; Puget Sound (Nutting). 



CAMPANULARIA RITTERI sp. nov. 

 (PUite xvii, fig. 5.) 



Tropkosome. — Colony usually consisting of unbranched pedicels 

 growing directly from a creeping rootstock. Pedicels long and 

 slender, usually with a single distinct annulation at the distal end just 

 below the hydrotheca and about three less distinct ones at the proximal 

 end, the middle portion not being annulated. Hydrotheca; cylindrical, 

 large, delicate in structure and with a perfectly even rim. 



Gonosome. — Unknown. 



Distribtdion. — Juneau, Alaska, 20 fathoms. Collected by Prof. 

 Wm. E. Ritter to whose efforts the fine series of Hydroids here dis- 

 cussed is so largely due, and for whom this species is named. 



CAMPANULARIA SPECIOSA Clark. 

 (Pl.ite XVIII, fig. 3, Plate xix, fig. 3.) 

 Campanularia speciosa Clark, Proc. Acad. Nat. Sciences, Philadelphia, p. 

 214, 1876. — Levinsen, Meduser, Ctenophorer og Hydroider fra Gron- 

 lands \'estkyst, p. 25, 1893. 



