[97] ALBATROSS EXPLORATIONS. } 599 
the animal clings to a foreign body. This specialization may also serve 
for the capture of prey, since Pterophysa has no tentacles for that pur- 
pose. The genus was found clinging to the ‘‘dredge rope” at station 
2227. Collected in 1884. 
Angelopsis globosa, gen. et sp. nov. 
Lesson, in his ‘Histoire des Zoophytes Acalephes,” figures and de- 
scribes an interesting medusa, discovered by Rang, to which he gave 
the name Angela. This genus lies between Physalia and other Physo- 
phores, and, filling that gap, is of greatest interest. Unfortunately, since 
the original description by Lesson, Angela has never been rediscovered. 
The collection of the “Albatross” contains a Physophore closely allied 
to Angela, to which the name Angelopsis seems appropriate. There are 
two specimens of Angelopsis from station 2105, in latitude 37° 50/ 00”, 
N., longitude 73° 03/50” W., in a depth of 1,395 fathoms. Angelopsis is 
intermediate in structure between Rhizophysa and Physalia, and in my 
judgment shows that Dr. Chun is right in separating these genera from 
the other Physophores with which they have so little in common. 
Pelagia cyaneila Per. et Less., Stomolophus meleagris Ag., Aurelia flavi- 
dula Per. et Les., and an unknown Aurelian are found in the collection. 
There are two specimens of the latter, which is probably a new genus. 
In this brief enumeration I have simply made mention or touched upon 
the salient features of my new genera, without entering upon the many 
morphological considerations which such unusual forms suggest. Ihave 
not enumerated the new species of hydroid gonophores, since at this 
stage of my research it would be impossible for me to rightly estimate, 
in the case of most of them, whether their characters are generic or 
svecific. From the nature of the case these small, almost microscopic, 
meduse require a longer time for identification. The whole collection 
confirms a fact which every student of marine zoology who has collected 
in the Gulf Stream has long known, that these waters teem with a 
medusan life, of which only a small fraction has yet been described. 
The following list contains the majority of the Meduse sent to me. 
Several doubtful species are omitted. The majority of the latter are 
hydroid gonophores of small size and doubtful affinities. 
ACRASPEDA. . 
Atolla Verrillii, sp. nov. 
Aurelia flavidula Per. et Less. 
Ephyroides rotaformis, gen. et sp. nov. 
Nauphantopsis Diomedece, gen. et sp. nov. 
Periphylla hyacinthina Steenstrup. 
Periphylla, sp. nov., forsitan gen. nov. 
Stomolophus meleagris Ag. 
Aurelia, incerte sedis, 
