30 THE OCEANIC HYDROZOA. 



Genus IV. Pa ay a. 



P. cymbiformis. 

 ' (P. diphyes, P. maxima.) 



IV. Fam, HIPPOPODIIDtE. 



Calycophoridse with many nectocalyces, whose hydrcecia are iucomplete. No hydrophyllia. 



a. The nectocalyces horseshoe-shaped, smooth. 



Genus V. Hippopodius. 

 1. H. gleba. 



b. The nectocalyces produced into several pointed processes. 



Genus VI. Vogtia. 



1. V. pentacantha. 



Fam. DIPHYDiE. 



Genus DIPHYES {Cmier). 



Both the nectocalyces have a mitrate form, with five more or less convex faces, and 

 hence, a pentagonal transverse section. The proximal nectocalyx is as large as, or larger 

 than, the distal one. The hydrophyllia are folded round like the spathe of an arum, and have 

 their outer surfaces not facetted or irregular, but smoothly convex. 



1. Diphyes dispar {Chamisso and Fysenhardt, 1821). PI. I, fig. 1. 



Biphore biparti, Bory de St. Vincent, 1804. 



Diphyes, Cuvier, 1817. 



Diphyes dispar, Chamisso and Eysenhardt, 1821. 



— Bory, Quoy and Gaimard, 1824. 

 Diphyes, Quoy and Gaimard, 1827. 



— anguslata, Eschscholz, 1829. 



— dispar. Idem. 



— camp anulif era. Idem. 



— Bonji, De Blainville, 1830. 



— dispar. Lesson, 1830. 



— Bory, Quoy and Gaimard, 1833. 



— regularis, Meyen, 1834. 



— ■ turgida ? Gegenbaur, 1854. 



The proximal and distal nectocalyces are of the same length ; but the proximal is the 

 thicker. 



