PORPITIDAE. 323 



Physalia utriculus (La MABTmifcRE) Eschscholtz. 



Medusa utnculus La MARTiNifeRE, 1787, p. 365, pL 2, fig. 13, 14; Gmelin, 1788, p. 3155; La Pekouse, 



1798, atlas, pL 20, fig. 13, 14. 

 Physalis lamarUnieri Tilesius, '10, p. 99; Eysenhardt, '21, p. 421; Blainville, '30, p. 103. 

 Physalis cornuta + fosbeckii + afer Tilesius, '10, p. 104. 

 Physalia utriculus Eschscholtz, '29, p. 163, taf. 14, fig. 2; Bl.unville, '34, )). 113; Lesson, '43, p. 557; 



Huxley, '59, p. 101, pi. 10, pi. 12, fig. 12; Haeckel, '8Sb, p. 351; Chun, '97b, p. 86; Agassiz 



and Mayer, : 02, p. 169; Browne, : 04, p. 744; Lens and Van Ribmsdijk, : 08, p. 118, pi. 24, 



fig. 174, 175. 

 Physalia ausiralis Lesson, '26, p\. 5, fig. 1, 2; '30, p. 38. 



Physalia inegalisia Brandt, '35, p. 37; Bigelow, : 04, p. 265 (non I'eron and Lesueur, '07). 

 Alophota merlensii Haeckel, '88b, p. 348. 

 Arelhusa Ihalia Haeckel, '88b, p. 349. 

 Physalia physalis Schneider, '98, p. 190 (partim). 



A critical revision of the species of Physalia from the region of the Cape 

 of Good Hope, where they are described as abundant, would be of the greatest 

 value. 



Chondrophorae CH.unsso and Eysenhardt, 182L 

 Disconeclae Haeckel, 1888. 



This suborder contains two well-marked families, the Torpitidae and the 

 Velellidae. 



Porpitidae Brandt, 1835. 



The Porpitidae are readily separable into two groups, one with high vaulted 

 conn, the other flattened and disc-like. Haeckel proposed two genera for the 

 former, on the supposition that the tentacles in this subdivision were arranged 

 after two distinct plans, either in separate groups, or regularly over the entire 

 surface of the tentacular zone. The former condition, according to his view, 

 characterizes Porpalia, the latter Porpema. His own figures, however, show 

 that the distinction is not a valid one, because in his figure (pi. 48, fig. 2) of 

 the denuded corm of Porpalia prunella the tentacle-scars are not arranged in 

 groups, but are evenly distributed exactly as they are in Porpema or in Porpita. 

 The apparent grouping of the tentacles in this case corresponds exactly to the 



