152 Mr. J. W. Fewkes on Angelopsis. 
suggestion, does not seem to have been shown to be false by 
Heckel’s criticism. J cannot agree with him that they are 
** probably nectophores,” and that if they are aurophores they 
may still be “ new individuals * budding from the thickened 
region” &c. as suggested. 
Float.—The float of Angelopsis is spheroidal, the longer 
diameter being situated in a horizontal plane. The upper 
portion is somewhat flattened and convex. There is no apical 
external opening. The longer diameters of the two specimens 
examined are respectively 5 and 7 millim. 
No variation in colour was observed in the external walls. 
The float is whitish in alcohol ft. 
When the external surface of the float is examined with a 
hand-lens there are observed scattered over its surface clear 
spaces, c, resembling nematocysts. Similar structures are 
recorded and figured by me in Rhizophysa gracilis from 
Florida f. 
Nectocalyces.—No nectocalyces were observed, although 
the characteristic elevations from which they are said by 
Heckel to arise in related genera are prominent. ‘The struc- 
tures gm, gmm, gm’, which Heckel says “ are probably necto- 
phores,” are not “nectophores,” and have no anatomical 
features of the nectophores of other Siphonophora. The 
ease with which nectocalyces are dropped renders it possible 
that they once existed in Angelopsis; but as I have not 
found them they are not described or figured §. 
Polyp-stem.—TVhe portion of the Angelopsis corresponding 
to the polyp-stem (siphosome) of other Siphonophores is 
enlarged into a thick-walled, bulbous, more or less carti- 
laginous structure, which forms. the lower or basal region of 
the animal. In one specimen this portion is contracted into 
a globular base of about the same size as the float, and in it 
forms a dish-like cavity, the diameter of the rim of which is 
* Heeckel in one place (p. 283) considers the aurophore an “ organ,” 
in another, two lines below, a “ peculiar Medusoid person.” I am 
unable to tell which opinion he holds as to its character. 
+ The marked reddish pigment, which in Athorydia and other genera 
is found at the apex of the float, retains some of its colour even after 
specimens have been in alcohol several years. 
{ “Notes on Acalephe from the Tortugas, with a Description of new 
Genera and Species,” Bull. Mus. Comp. Zool. vol. ix. no. 7, 
§ Heeckel gives a beautiful figure of Stephalia with a circle of necto- 
calyces. Unfortunately he does not describe the nectocalyces in his 
specific diagnosis. He also gives figures of Rhodalia, the nectocalyces 
of which are ‘‘ semidiagrammatic,” and says in his text, “ Of course the 
form and position of the detached nectophores could not be recognized in 
the spirit specimens with full certainty, the soft jelly substance being 
much contracted by the action of the alcohol.” 
