V.—REPORT ON THE MEDUSA COLLECTED BY THE U.S. FISH 
COMMISSION STEAMER ALBATROSS IN THE REGION OF THE 
GULF STREAM, IN 1885-’86. 
By J. WALTER FEWKES. 
The following paper considers the Meduse collected in the summers 
of the years 1885 and 1886 off the eastern coasts of the United States, 
in the region of the Gulf Stream. In this collection there are many 
genera which have already been described from this locality, and others 
which are believed to be new to science. Many belong to the so-called 
deep-sea fauna, and some, formerly supposed to be limited to great 
depths, are recorded by the collector from the surface waters. 
Among Siphonophores, some of the most interesting are new speci- 
mens of the gigantic physophore, Pterophysa. One specimen in the 
collection of these animals reaches the great length of 23 feet in al- 
cohol. Next to certain recorded specimens of the genus Apolemia, this 
is one of the largest Physophores yet described, and is the largest yet 
reported from the waters of the Gulf Stream contiguous to our coast. 
The new genus Pleurophysa is interesting in its relationship to the 
Rhizophysidz, and the somewhat peculiar characters of the polypites. 
Stomatoca periphylla is recorded for the first time from the western 
waters of the Atlantic. 
A new Pegantha, a genus which has never before been found in the 
Gulf Stream, is described. As more and more specimens of the inter- 
esting genus Atolla, ascribed by Heckel to the deep-sea fauna, are col- 
lected, the number of specimens from the surface water is increased. In 
the present collection we have three more examples of this medusa from 
the surface. This fact would seem to indicate that the genus is not 
necessarily confined to the great depth at which it was collected by the 
Challenger. 
Halicreas and Solmaris incisa are found in the collection, and new 
facts for the acceptance of the deductions made from previously known 
specimens recorded. 
Ephyroides rotaformis is represented by several specimens. 
A new Ctenophore, of the known genus Callianira, is recorded for the 
first time from the waters of the Gulf Stream. 
[1] ; . 513 
S. Mis. 90)-——33 
