302 BULLETIN OF THE 



SIPHONOPHORA. 



PHYSOPHOEID^I. 



Apolemia, sp. (Provisional.) 



A fragment of an Apolemia* stem from which covering-scales and necto- 

 calyces have been broken off was taken by the commission. 



Agalma elegans, Fewkes. 



A mutilated specimen of a Physophore which is identified as belonging to 

 this species is found in the collection made in 1880. The locality given is 

 " Gulf Stream, surface." 



Haliphyta magnifica, gen. et sp. nov. 



Figrs. 39, 40. 



The most interesting, and at the same time tantalizing find, was a magnifi- 

 cent new Physophore, which was destitute of both nectocalyces and tentacular 

 knobs. These structures, so important in generic determinations of Siphono- 

 phores, had evidently been detached from the stem in the capture of the ani- 

 mal, and we must wait for future observations to determine their form. The 

 structures, however, which remain, especially the covering-scales, polvpites, and 

 stem, show that the genus to which they belong is different from any which 

 have yet been described. 



The genera with which Haliphyta is liable to be confounded are Stephanomia 

 M. E., Halistcmma, Huxley, Agalma, Esch., and Agalmopsis (restricted sense). 

 Although in the broken specimen before me the nectocalyces and tentacular 

 knobs, the structure of which has generally been relied upon for generic differ- 

 ences, are gone, from what is left there can be no doubt that the animal to be 

 descril>ed is a type of a new genus. 



The polvpites of Stephanomia differ from those of Agalma, Agalmopsis, and 

 1 Jalist ■■ nnma in possessing long peduncles. HaUphyta serins to have the same 

 long peduncles as Stephanomia. Unlike Stephanomia (Fonkatia) the margin 

 of the few covering-scales which remain in the bottle with our new genus and 

 attached to its axis is not indented or notched. When placed in alcohol the 



the same with or very similar to Carybdcn ma/nupialit of later authors. B 

 strop's name Periphylla is followed to designate the first of these forms, boos the 

 generic name Carybdea is commonly given to the latter. ((')'. rTaeckel, foe. - ■'.. I. _, 

 pp. IK> ; m d }:;:».) The Discophore which I have identified *a Dodecabottrycha etubia, 

 Brandt, is probably the same. (<'f. Bull Mas. Comp. ZooL, VIII. 7.) 



* The stem of this specimen is twisted in the same direction as that of alcoholic 

 ApdU nun. I'varia brought from Naples. No identification of species could be made. 



