THE HYDROMEDUSAE 53 



Family 4. Cladonemidae. Genera — Pteronema (? a Codonid), Hkl. ; Zan- 

 clea, Gegenl). ; Gemmaria, M'Crady [Gemmaria]; Eleutheria, Qiiatref., 

 IClavatelUi] ; Ctenaria, Hkl. ; Dendronema, Hkl. ; Cladonema, l^^'j-> 

 [Cladonema = Staaridium] (? a Codonid); JFillsia, FoiIjcs, [Lar]. 



(b). Hydroid Scheme. 



Famiia' 1. Cl.widae. Genera — Clava, Gniel. [S] ; Bhizogeton, A. Ag. 

 [S] ; Cordijlophora, Alhn. [8]; Tuhiclava, Allm. [S] ; Merona, Korni. [S]. 

 Family 2. Turridae. Geneia — Turris, Less., = Clarula, Str. AYiight, 

 [Turns']; Campanidava, Allni. [S] ; Conjdendriam, \an Ben. [?] ; Dendro- 

 clava, Weismann, [Dendroclava] (? Pandaeid). Family 3. Corynidae. 

 Genera — Coryne, Giirtn. [S] ; Actinoyoninm, Allm. [S] ; Syncoryne, 

 Elirenb. {])aTS.),[Codonium + Sarsia + Syndicfyoir'] ; GymnocoryneyHincks [?] ; 

 Corynetes, M'Crady, [Corynetes = Halocaris] ; Gemmaria, M'Crady, [Gem- 

 maria] ; Sphaerocoryne, Pictet [?]. Family 4. Bougaixvilliidae. Genera 

 — Bougainvillea, Le.ss., [Margelis + Hip>pocrcne] ; Perigonimus, M. Sars., 

 [Dinema + 1 Amjihinerna]; Bimeria, S. Wright [S] ; Dicoryne, Allm. [S]; 

 Sfylactis, Allm. [S] ; Garveia, S. Wright [S] ; JFrightia, Allm., = Atractylis, 

 S. Wright [S] ; Hydranthea, Hincks [S] ; Heterocordyle, Allm. [S]; Cio7iistes, 

 S. Wright [S] ; Stylactella, Hkl. [?]. Family 5. EunEXDRiiDAE. Genus 

 — Eudendrium, Elirenb. imis. [S]. Family 6. Peknariidae. Genera — 

 Pennaricn, Go\M.,[Glohiceps] ; Stanridium, Duj., [Cladonema] ; Halocordyle, 

 Allm., [Halocordyle] ; Vorticlava, Alder [?] ; Heterostephanus, Allm., [Hetero- 

 sfephanus]; Acharadria, S. Wright [?] ; Tiarella [Tiarella]. Family 7. 

 Clavatellidae. Genas — Clavatella, Hincks, [Eleidheria]. Family 8. 

 (vLadocoryxidae. Genus — Cladocoryne, Rotch [?]. Family 9. TuBU- 

 LARIIDAE. Genera — Tiibularia, Linn. pars. [S] ; Edopleura, A. Agass., 

 [Ectopleara]. Family 10. Myriothelidae. Genus — Myriothela, M. Sars 

 [S]. Family 11. Hydractiniidae. Genus — Hydradinia, v. Bened. [S]. 

 Family 12. Podocoryxidae. Genera — Podocoryne, M. Sars, pars., [Cytaeis 

 + Cubogaster + Dysmorphosa + Lizzia (i^ars.)] ; Corynopsis, Allm., [CorynojJ- 

 ais]. Family 13. Corymorphidae. Genera — Conjmorpha, M. Sars, pai«., 

 [Steenstnipia + Hyhocodon = Amphicodon ^ JJiplura + Amalthaea] ; Hala- 

 tradus, Allm., [Euphysa]. Family 14. Monocaulidae. Genus — Mono- 

 eauliis, Allm. [S]. Family 15. Hydrolaridae. Genus — Lar, Gosse, 

 [jyHlsia, vulgo Jnilia]. Family 16. Moxobrachiidae. Genus — Mono- 

 bradiium, Merej. [?]. [Family Spoxgicolidae. Genera — (Si)ongicola, 

 F. E. Sclmlze, = Slephanoscyphus, Allm., is probably a Scyphistoma).] 

 Family 17. Hydridae. Genus — if (/(?;«, Linn. [S]. Family 18. Myrioxe- 

 MIDAE. Genu-s — Myrionema, Pictet. Family 19. Ceratelladae. Genera 

 — Ceratella, Gray [S] ; Dehitella, Gray [S]. Ixcertae sedls — Protohxjdra, 

 Greef; Microhydra, Potts.; Haleremita, Scliaudinn ; Acaulis, Stimps. 



Order 2. Leptomedusae = Calyptoblastea. (For definition, see p. 22.) 



(o). Medusoid Scheme. 



Family 1. THAUMAXXiinAE. Genera — Tetranema, Hkl.; Dissonema, 

 Hkl.; Odonema, Hkl.; Tliaumantias, Eseh., [Cam2)anularia, etc.] lias 



