314 DISCOVERY REPORTS 



but extends its tentacles as far as possible, and they can cover an enormous area." 

 " i6 January 1902: Several specimens of this species were placed in a large bell jar 

 filled with fresh sea-water, and a number of copepods were turned in with them. As 

 soon as a copepod was seized with one of the tentacles, it was conveyed to the mouth 

 by the shortening of the tentacle, and the umbrella would also become contracted near 

 the place surrounding that tentacle, the manubrium at the same time being directed 

 towards the food. There seemed to me great intelligence displayed by these medusae 

 while feeding." Vallentin also remarks that the manubrium in the living animal usually 

 extends to the edge of the umbrella cavity and only occasionally beyond it. 



Family OLINDIIDAE 

 Genus Aglauropsis Fritz Miiller (1865) 



Generic characters. Olindiidae without centripetal canals ; with numerous enclosed 

 marginal statocysts. Numerous tentacles, evenly distributed round the margin of the 

 umbrella and not arranged in groups ; tentacles without adhesive pads. 



The genus Aglauropsis was founded by Fritz Miiller (1865) for a medusa found on the 

 coast of Brazil. The description of the species [Aglauropsis agassizii), the only species of 

 the genus, is so vague and so imperfect that it just defines the generic characters and no 

 more. The description is given in a paper "Ueber die Randblaschen der Hydroid- 

 quallen", and there is a poor figure of a statocyst. It would not be safe to use the 

 specific name for the Falkland medusa, as it would imply that the Falkland species 

 occurred on the coast of Brazil. The safest place for the Brazilian species would be the 

 obsolete list, for it is practically undescribed. 



Aglauropsis is distinguished from Olindias Fr. Miiller, Maeotias OstroumofF, and 

 Eperetmus Bigelow by the absence of centripetal canals from the ring canal, and from 

 Gonionemus L. Agassiz and Cubaia Mayer by the absence of adhesive pads on the 

 tentacles. 



Aglauropsis conantii Browne (Plate XVIII, figs. 7-16). 



Aglauropsis conantii Browne, 1902, p. 283. 

 Aglauropsis conantii Browne, 1904, p. 736. 

 Aglauropsis conantii Browne, 1905, p. 151. 

 Aglauropsis conantii Mayer, 1910, p. 362. 



Specific characters. Adult (Plate XVIII, fig. 7): Umbrella bowl-shaped, with an 

 inverted margin, a little broader than high ; gelatinous substance thick. Stomach some- 

 what cone-shaped, about half to two-thirds the length of the umbrella cavity. Mouth 

 with four large, perradial lips, having a folded margin with a band of nematocysts. 

 Radial canals and ring canal very broad. Gonads occupying nearly the whole length of 

 the radial canals, but separated by a short space from the stomach and also from the 

 ring canal, transversely divided into lobes. Tentacles very numerous, about 200, 

 closely packed in two or three alternating rows round the margin. Statocysts internal, 



