56 THE HYDROMEDUSAE 



FAMILY 2. PORPITIDAE. Genera Porpalia, Hkl. ; Porpema, Hkl. ; Por- 

 pitella, HkL ; Porpita, Lamk. FAMILY 3. VELELLIDAE. Genera Rataria, 

 Esch. ; Velella, Lamk. ; Armenista, Hkl. 



SUB-ORDER 2. CALYCONECTAE. 



Definition. Siphonophora without pneumatophore, with one or more 

 nectophores. The coenosarc is elongated and tubular, and carries the 

 cormidia which may become freed as Eudoxomes or Ersaeomes ( = Mono- 

 gastricae). 



FAMILY 4. MONOPHYIDAE. Genera Monophyes, Glaus ; Sphaeronectes, 

 Huxl. ; Cymbonectes, Hkl. ; Muggiaea, Buscli ; Cymba, Esch. ; Doramasia, 

 Chun ; Halopyramis, Chun. FAMILY 5. DIPHYIDAE. Genera Praya, 

 Blainv. ; Lilyopsis, Chun ; Galeolaria, Lesueur ; Diphyes, Cuv. ; Mitro- 

 phyes, HkL ; Diphyopsis, Hkl. ; Abyla, Quoy Gaim. ; Bassia, Quoy Gaim. ; 

 Calpe, Quoy Gaim. ; Amphicaryon. FAMILY 6. STEPHANOPHYIDAE. Genus 

 Stephanophyes, Chun. FAMILY 7. DESMOPHYIDAE. Genera Desmalia, 

 Hkl. ; Desmophyes, HkL FAMILY 8. POLYPHYIDAE. Genera Hvppopodiut, 

 Quoy Gaim. ; Polyphyes, Hkl. ; Vogtia, K61L 



[FAMILY EUDOXIDAE (includes free Eudoxomes of other genera, the 

 names of which are included in square brackets). Genera Diplophyta, 

 Gegenb., [Sphaeronectes] ; Eudoxella, HkL, [Praya] ; Cucubalus, Quoy Gaim., 

 [Muggiaea] ; Cucullus, Quoy Gaim., [Diphyes] ; Cuboides, Quoy Gaim., 

 [Cymba'] ; Amphirrhoa, Blainv., [Abyla] ; Sphenoides, Huxl., [Bassia] ; 

 Aglaisma, Esch., [Calpe]. FAMILY ERSAEIDAE (includes free Ersaeomes of 

 other genera, the names of which are included in square brackets). 

 Genera Ersaea, Esch., [Diphyopsis] ; Lilaea, Hkl., [Lilyopsis].] 



SUB-ORDER 3. PHYSONECTAE. 



Definition. Siphonophora with an apical pneumatophore, followed 

 by one or more coronae of nectophores or bracts, without aurophore. 

 The coenosarc is elongated and tubular, and carries the cormidia. 



FAMILY 9. CIRCALIIDAE. Genus Circalia, HkL FAMILY 10. 

 ATHORIIDAE. Genera Athoria, HkL; Athoralia, Hkl. FAMILY 11. 

 APOLEMIIDAE. Genera Dicymba, Hkl. ; Apolemia, Esch. ; Apolemopsis, 

 Brandt. FAMILY 12. AGALMIDAE. Genera Stephanomia, Per. Les. ; 

 Crystallodes, Hkl. ; Phyllophysa, L. Agass. ; Agalma, Esch. ; Anthemodes, 

 HkL ; Cuneolaria, Eysenh. ; Halistemma, Huxl. ; Cupulita, Quoy Gaim. ; 

 Agalmopsis, M. Sars ; Lychnagalma, HkL FAMILY 13. FORSKALIDAE. 

 Genera Strobalia, Hkl. ; Forskdlect, Koll. ; Forskdliopsis, Hkl. ; Bathy- 

 physa, Studer. FAMILY 14. NECTALIDAE. Genera Nectalia, Hkl. ; 

 Sphyrophysa, L. Agass. FAMILY 15. DISCOLABIDAE. Genera Physophora, 

 Forsk. ; Discolabe, Esch. ; Stephanospira, Gegenb. FAMILY 16. ANTHOPHY- 

 SIDAE. Genera Rhodophysa, Blainv. ; Melophysa, Hkl. ; Athorybia, Esch. ; 

 Anthophysa, Mertens. 



SUB-ORDER 4. AURONECTAE. 



Definition. Siphonophora with an apical pneumatophore, followed 

 by coronae of nectophores, and carrying an aurophore. Individuals con- 



