CALYCONECTAE. 



149 



fertile ; without special nectocalyx. Diplophysa Gegenbaur ; Eudoxella H. ; 

 Cucubalus Q. and G. ; Cucullus Q. and G. ; Cuboides Q. and G. ; Amphiroa 

 Blainville ; Sphenoides Huxley ; Aglaisma Esch. 



Fam. 2. Ersaeidae. Monogastric, cormidium composed of three medusoids, 

 a sterile, a fertile, and a special nectocalyx. Ersaea Esch. ; Lilaea H. ^ 



Fam. 3. Monophyidae. Calyconedae Polygastricae with a single nectophore 

 at the apex of the long tubular stem. Cormidia eudoxiform, separated by equal 

 free intern odes ; each siphon with a bract. Monophyes* Glaus ; Sphaeronectes* 

 Huxley (Fig. 121); Mitropliyes H.; Cymbonectes^ H.; Muggiaea^ Busch. (Fig. 

 122); Cymba Esch. ; Doramasia^ 

 Chun ; Halopyramis^ Chun. 



Fam. 4. Diphyidae.iJ: Poly- 

 gastric Calyconectae with two 

 nectocalyces at the apex of the 

 long tubular trunk. Cormidia 

 eudoxiform separated by free 

 equal internodes ; each siphon 

 with a bract. Pray a Blainville ; 

 Galeolaria (confounded with 

 Epibulia a Cystonect) Lesueur ; 

 Diphyes Cuvier (Fig. 118) ; 

 Diphyopsis H. ; Abyla Q. and G. ; 

 Bassia Q. and G.; Calpe Q. 

 and G. 



Fam. 5. Stephanophyidae. 

 Polygastric, with several apical 

 nectocalyces and a special necto- 

 calyx on each cormidium. With 

 small palpons with long tentacles 

 on the intemodes. Cormidia not 

 set free as ersaeids. Stephana- 

 phyes Chun. 



Fam. 6. Desmophyidae. Poly- 

 gastric Calyconectae with four or 

 more nectocalyces, opposite, in 

 pairs. Cormidia eudoxiform or 

 ersaeiform, separated by equal 

 internodes ; each siphon with a 

 bract. Dcsmalia H. ; Desmophyes 

 H.; umbrella edge of special 

 nectocalyx with 8 ocelli and 8 

 short tentacles. 



Fam. 7. Polyphyidae. Poly- 

 gastric Calyconectae with four or 



FIG. 124. An advanced Siphonula larva of Epi- 

 bulia aurantiaca with one large nectocalyx (after 

 Metschnikoff, from Balfour). So somatocyst; 

 ?ic second imperfectly developed nectocalyx ; 

 Tipli hydrophyllium ; po siphon ; t tentacle. 



* According to Chun the primary nectocalyx of the larva persists in these 

 genera, and there are no secondary or replacement nectocalyces. 



t Chun states that in these genera the primary cap-like nectocalyx is thrown 

 off and replaced by a pyramidal secondary nectocalyx. 



J In this family the primary nectocalyx is replaced by two secondary bells, 

 which are themselves replaced by a succession of similar bells formed from 

 similar buds. 



