AURONECTAE. 



153 



Fam. 4. Agalmidae. Polygastric Physonectae with a long tubular stem, 

 bearing numerous siphons, palpons, and bracts. Nectocalyces numerous, 

 biserial. Pneumatophore Avith radial pouches. All the genera except four, 

 viz., Stephanomia Per. and Les., Crystallodes H., Anthemodes H., Curjfolaria 

 Eysenhardt, have dissolved cormidia. Phyllophysa L. Ag. ; Agalma "Esch. ; 

 Halistemma Huxley (Fig. 126) ; Cupulita Q. and G. ; Agalmopsis Sars (Fig. 128) ; 

 Lychnagalma H. 



Fam. 5. Forskalidae. Polygastric, with a long tubular stem bearing 

 numerous siphons, palpons, bracts ; 

 each siphon with a branched ten- 

 tacle. Nectocalyces numerous ; 

 multiserial, strobiliform in several 

 spiral rows. Pneumatophore with 

 radial pouches. The largest and 

 most splendid of all Physonectae. 

 Cormidia dissolved in all except 

 Strobalia H. Forskaliopsis H. has 

 palpacles among the nematocalyces. 

 Forskalia Kolliker ; Bathyphysa 

 Studer. 



Fam. 6. Nectalidae. Polygas- 

 tric, with a short vesicular stem, 

 bearing numerous siphons, palpons, 

 and bracts ; tentacles branched. 2 

 or 4 rows of nectocalyces. Pneu- 

 matophore with radial pouches. 

 Nectalia H.; Sphyrophysa L. Ag. 



Fam. 7. Discolabidae. Like 

 the preceding but with a corona 

 of palpons instead of bracts ; with- 

 out bracts. Physophom Forskal, 

 biserial nectocalyces (Fig. 125) ; 

 Discolabe Esch., quadriserial necto- 

 calyces ; Stcphanospira Gegenbaur, 

 multiserial nectocalyces. 



Fam. 8. Anthophysidae. Poly- 

 gastric, with short vesicular stem 

 bearing numerous siphons and pal- 

 pons ; each siphon with a branched 

 tentacle. Nectocalyces replaced by 

 corona of bracts (as in Fig. 128). 

 Pneumatophore with radial pouches. 

 Ehodophysa Blainville ; Melophysa H. 

 Ploeophysa Fewkes. 



NK 



FIG. 128. Small larval colony of Agalmopsis after 

 the type of Athorybia. Lf pneumatophore ; D 

 the crown of hydrophyllia ; Nk groups of nema- 

 tocysts ; P siphon. 



; Athorybia Esch.; Anthophysa Mertens ; 



Section 3. AURONECTAE. 



Siphonanthae icith a large pneumatophore, a corona of nectocalyces, 

 a peculiar aurophore, and a network of canals in the jelly of the 

 thickened trunk. Siphosome spheroidal, ovate, or turnip-shaped. 



Deep sea forms. The aurophore (Fig. 129) is an appendage of 



