1. Comparative anatomy of the nourishing individuals, and 



svsteniatic division of the thecaphore hydroids 



II. Thecaphore Hydroids of the Northern Atlantic 



Fai:iilv series Ilebrllina 



Family Lafaidee 



Lafita (Lamouroux) 



Lafiea diiiiiosa (Fleming) 



— gracillimn (Alder) 



— fruticosa M. Sars 



Toichopoina L, e V i n s e n 



Toichopoma obliqiium (Hincksl 



Grammaria ( S t i m p s o n ) 



Graminaria serpens (Hassallj 



— eonferta ( A 1 1 ni a n ) 



— abietina ( M. Sars) 



— imiiiersa Nutting 



Lictorella ( A 1 1 m a n ) 



Lictorella pinnata ( G. O. Sars) 



Zygophylax Q u e 1 c h 



Zygophvlax hiannata Billard 



Faniilv Campanuli?iidiB 



Subfamily Cuspidellina 



Stegopoma L e v i n s e n .' 



Stegoponia plicatile ( M. S a rs ) . r 



Cuspidella Hincks 



Citspidellfi hnmilis Hincks... 



Lafoeina M. Sars 



Lafoeina maxima Levinsen 



Campanitlinii van B e n e d e n 



Campanuhna turrita Hincks 



Subfamily Calycellmec 



Calycella (Hincks) 



Calycella syringa ( L i n n e ) 



Tetrapoma Levinsen 



Tctrapama qiiadridentatitm (Hincks) 



Family series Haleciina 



Family Haleciida .-. 



Halecium Oken 



Halecium halecinum ( Li n n e ) 



■ — Beaiiii Johnston 



— scutum Clark 



— curvkaule v. Lorenz 



CONTENTS 



P-ige Pace 



Halecnim muncatuiu (Ellis and SolanderV... 43 



I — labrosum Alder 45 



6 — tenellum Hincks... 46 



6 — iiiniutuni Broch 50 



6 Family Phcmulariidie 51 



7 Kirchenpaueria ( Jickeli ) 52 



7 Kirehenpaueriei pinnata ( Li n n e ) 53 



9 Plumularia (Lamarck) 55 



1 2 Plumularia setacea ( L i n n e : 55 



15 '" — Catharina Johnston 56 



15 Polyplumaria G. O. S a rs 58 



x6 Polyplumaria frtttescens (Ellis and S o 1 a n d e r) . 59 



16 — fiabeilata G. O. Sars 59 



17 — J>rofunda (Nutting) 60 



1 8 '^[Nemertesia Lamourou.x 62 



2 2 Nemertesia antennina ( L i n n e ) 64 



22 — ramosa Lamouroux 66 



22 Polynemertesia nov. gen. 69 



24 Polynemcrtesia gracillima (G. O. Sars) 70 



24 Family Aglaoplieniidca 72 



25 Halicornaria (Busk) 72 



26 Halicornaria campanulata (Ritchie) 72 



26 Nematocarpus nov. gen 74- 



26 Nematocarpus ramultferus ( .\ 1 1 m a n ) 74 



29 Aglaophenopsis (Fewkes) 77 



29 Aglaophenopsis cornuta ( V e r r i 1 1 ) 77 



29 — (?) pharetra nov. sp 80 



30 Cladocarpus A 1 1 m a n S2 



30 Cladocarpus integer 1 G. O. Sars ) 82 



31 — forniosus Allm an 85 



32 — Diana nov. sp 87 



32 — bicuspis :, G. O. S a rs ) 89 



32 Thecocarpus Nutting 9' 



34 Thecocarpus myriophyllum ( L 1 n n e ) 92 



34 Aglaophenia (Lamouroux) 93 



35 Aglaophenia tubulifera Hincks ; 93 



35 Family series Sertulariina 94 



35 Family Sertulanidce 94 



36 Sertularella Gray 9^ 



38 Sertularella tamarisca ( Li n n e ) 96 



39 — tricuspidata (Alder) 98 



41 — amphorifera .-^ 1 1 ni a n ICO 



