REPORT ON THE DEEP-SEA MEDUSAE. 



XI 



12. Hypothetical Ancestral Tree of the Craspedotse (Polyphylctic). 



II. LEPTOMEDUS/E 



III. TRACHOMEDUS.E 



I. ANTHOMEDUS.E 



(Ctenophor*) 



Cladonemid.e 

 Dendronemidre 



(SipnoNOPHOR^:) 



Tiarid.e 

 Pandajidoe 



Ctemria 



Pteronemidse 



Amphinemidfe 

 I 



Protiaridse 

 (Protiara) 



MARGELrD.E 



Cladostylse 



Haplostyls 

 (Cyteeis) 



iEQUORIDa: GERYONIDiE 



Polycannida? Carmarinida: 



Zygocannidaa 



Cannotid^; 

 Berenicidoe 



Williadoe 



Polorchidse 



Oetocannidse 

 Octocanna 



EucopiDa: Liriopidae 

 Polyotessae Liriantlm 



Aglaurid^; 

 Persida; 



Aglanthidas 



IV. NARCOMEDUS.E 



SOLMARIWE 



Solmundinae 

 (Solmwndus) 



Octotessae 



Thaumantid^ 

 Orchistoniida; 



Melicertids 



Laodicida? 



Staurodisais 



Eucopium 



Tr.ACHYNEMIDiE 



Pectyllida; 



I 

 Marmanemidae 



Aglantlia 



Trachynema 



Solmonetida; 

 (Solmoncta) 



Solmissida? 

 (Solmissus) 



Petasid^; 

 Olindiadae 



I 



I 

 Petachnida? 



Codonidb 



Tetranemal ancestral form: 

 Codonium* 



Ancestral Polyps of the 

 Anthomeduspe : 



TUBULARI.E 



Thaumantid^; 



Tetranemal ancestral form : 

 Tetrancma* 



Ancestral Polyps of the 



Leptomedusae: 



Campantjlari^; 



PETASIDi; 



Tretranemal ancestral form : 

 Petasus* 



JEaiNms 

 iEginodorida} 



PEGANTHrD* 



{Polycolpa) 



iEginuridae 



.ffiginetidaa 

 C&giiw.) 



CUNANTHIDJE 



Tetranemal ancestral form: 

 (Cunaiiiha*) 



Ancestral Polyps of the Trachylina? 



(Trachomedusa? and Narcomedusce) : 



(Trachtlari^;?) 



Hydropoltpi 



Hydropolypi 



-Scyphopolypi : Scyphosloma 



ARCHYDRA (Ancestral form of all Cnidarise) 



GastrjEA (Ancestral form of all Metazoa) 



