Mr. J. W. Fewkes on Angelopsis. 149 



the voluminous pneumatopliove, the powerful horizontal 

 corona of radially expanded nectopliores, and particularly the 

 singular aurophores, wanting in all other Siphonoplioraa, and 

 acting probably as an important gas-secreting gland or a 

 pneumadenia," It is certainly difficult to see how any of the 

 above-mentioned features " make it probable that the Auro- 

 nectje are permanent deep-sea Siphonophoraj . . . but never 

 come to the surface." One might even suggest that exactly 

 the reverse conclusion might be drawn and that some of these 

 features imply life at or near the surface. 



The failure to find nectocalyces in Angelopsis led me to 

 suppose that these organs or individuals are wanting in this 

 genus. I cannot now say that they are present, as they are 

 also not found in the new specimen which I have lately 

 studied. As Hseckel found them in the same bottles with 

 his Aurah'a^ and Ehodalia, it is possible that they once 

 existed in Angelopsis^ and future studies may bring them to 

 light. 



The following general description of AngeloiJsis was given 

 in my original account f of this Medusa : — 



" This Medusa has a spherical region above, which is con- 

 sidered [to be] a float, on the underside of which is clustered a 

 number of small bodies resembling tentacles. The former 

 region {py.cy.) resembles the bell-like body in a Medusa ; the 

 latter a clump of tentacles closely massed together, with the 

 form which we might suppose they would have if the entrance 

 to the bell-cavity were closed by the velum and tentacles deve- 

 loped over its lower floor. The so-called float is spherical, 

 without apical opening or protuberance, smooth on the outer 

 sm-face and without radial elevations. Diameter from 7 to 10 

 millim. The wall of the float is thin, and in the interior is a 

 second thin-walled sac or float, wiiicli is supposed to corre- 

 spond to the pueumatocyst (^py cy.) of Bhizophysa. The inner 

 sac has no opening into the outer, and does not communicate 

 with organs below. It is destitute of appendages. Its cavity 

 {cav. p).) occupies the whole interior of the float. 



" The lower floor of the float is formed of the thickened 

 outer walls wliich bear the so-called tentacles. The thick- 

 ened region is found to have a cavity within {cav. b.) and to 



* Hteckel simply says that tlie corona of nectocalyces (nectophores) 

 is simple in Auralia, but gives no more information about them in this 

 genus. lie gives no account of their anatomy, whether they were sessile 

 or pedunculate, or any detail of any scientific value about them. His 

 description of Auralia is so superficial that it is very difficult to tell 

 whether it is the same as or diiierent from Angelopsis. 



t "Pteporton the Medusa) collected in 1883-84," Ami. Rep. U.S. 

 Fish Comm. 1884, 



