THE CAMPANULAKID^ AND THE BONNEVIELLIDJi. 



Main stem simple. 



Hydrothecal margin with bimucronate teeth. austrogorgia. 



Hydrothecal wall plicated above corona. 



Hydrothecal wall not plicated 



Hydrothecal margin even or undulating. ... ^,, „^o „i^onf a branch ....gracilis. 



Pedicels borne in pairs, the two individuals of a pair arising from the same side of a branch 9 



Pedicels not regularly in pairs. 



Stem geniculate. geniculata. 



Pedicels borne on pronounced shoulders of stem 



Shoulders absent or inconspicuous ._ ^^^^-^ 



Margin undulating, slightly plicated '_ ' 



Margin smooth, not plicated. hyalina. 



Pedicels annulated throughout hraziliensis. 



Pedicels smooth on median portion .surcularis. 



Stem distinctly flexuose 



Stem neither distinctly geniculate nor flexuose. _ dichotorm. 



5 to 8 annulations above each branch and pedicel origin 



5 or less annulations above each branch and pedicel origin. comraismralis. 



Branches from all sides of stem 



Branches alternate or opposite. ' flabellata. 



Ultimate branchings regularly dichotomous 



Branchings regularly alternate. longissima. 



Branches form flabellate structure griffini. 



Branches not distinctly flabellate _ • - • - ■_■■-■ ■-•■.■ ■ ' " , , • ' 



Branchings very irregular, tending to form flabeUate structure, no hydrothecal teeth. . ..boreahs. 



OBELIA GENICULATA (Linnaus.) 



Plate 18, figs. 1-5. 



Sertularia geniculata Linn^us, Systema Naturae, ed. 10, 1758, p. 812. 

 SerteZarm 9«mmtata LiNN^us, Fauna Suecica 1761, p. 541 

 Sertularia geniculata Houttuyn, Natuurlyke Historic, voL 17, 1761-73, p. SSi. 

 Sertularia geniculata Pallas, Elenchus Zoophytorum 1766 p. 117 

 Sertularia geniculata Linn^us, Systema Naturae ed. 12, 1767, p^ Wi/^ 

 Sertularia geniculata Boddaert, in Pallas, Lyst der ^]^-'-^^^:T^''^'^^'l ^^'■ 

 Sertularia geniculata Forskal, Descriptiones Anmmalium 1776, p^ xxvii. 

 Sertularia geniculata Mara™, De Plantis Zoophytes et Lithophy tes 1776 p^ 34^ 

 Sertularin geniculata Gronovius, Zoophylacium gronovianum, vol. 3 1781, p. 356. 

 Sertularia geniculata Ellis and Solander, Nat. Hist. Zooph., 1786, p^49. „ ,707 „ 157 



?; :S U'^lata WiLKiNS and Herbst, Charakteristik -^^ /Merpflanzen voL 2 1787^^ 157. 

 - Sertularia geniculata Gmelin, in Linnaeus, Systema Natu.^, ^^.^ ;^38-jf;ji- ^^l, '^2,^ p. 2I8. 

 Sertularia geniculata Berkenhout, Synopsis Nat. Hist. Gt_^ Bri^in and Ireland, i7«y, 



Sertularia geniculata Bosc, Hist. Nat. des Vers, 1802, voL 3, p. 99. 



S^rtafcm ^emcuZata TURTON, British Fauna, 1807, p. 215^ 



Sertularia geniculata Jameson, Cat. Animals of the Class Vermes 1811 p^ 564^ 



Sertularia geniculata Lamoijroux, Bull, soc philomatique, ^f 3. 1812, p. 184. 



Sertulurin geniculate Oken, Lehrbuch der Naturgeschichte, P*' =5, 1815 p. 92. 



Sertularia geniculata Lamarck, Hist. Nat. Amm^ sans_ ^ert, vo^ 2 1816, p^ 120. 



Laom^dea geniculata Lamouroux, Histoire des PolyPi^'^^*;"'^.^^^'^^'?'^' ^^'""'^'"^ ig'^^ 446 



Sertul.riaUi<^lata Stewart, Elements of Nat. Hist, of "^^^ ^^^^^^^l.^' IS^' ^^ T 



Sertulari. geniculata ScHWEiaoER, Beobachtungen -« "1^^ ^^^^^^^^^^ , THistoire des Zoophytes, 



Sertularia geniculata Deslongchamps m Lamouroux, Extrait d un travail. 



1824, p. 482. ^. . „ , _ flK„ Hip Ve!?etation und die Fauna von Helgoland, 1824, p. 258. 



ioome&a g-emmZato Blainville, Article Zioopuy «, 

 p. 255. 



iaoi^a ffemcuZafaBLAiNViLLE, Manual d'Actinologie, 1834. P-^474^ 

 CampanJaria geniculata Johnston, Cat. Zooph of B/'-^^^kshu-e 1834^ P^ 107. 

 Campanularia prolifera Meyen, Uber das Leuchten des Meeres, 1834, p. 195. 



