ANTARCTIC BENTHOS
47
species of Stylasterina as being strictly endemic, they are including
Challenger Station 320 at 37’17’5 as being in the area. This makes
comparative analysis difficult. Based upon Boschma and Lowe’s
distribution maps and text, 12 species of Stylasterina have been
recorded from the Antarctic in the sense used throughout this present
work. These are : Errina antarctica (Gray), E . gracilis von Marenzeller,
E . laterorifa Eguchi, E . aspera Gray, E . Jissurata Gray, E . labiata
Moseley, and an undescribed species, Allopora eguchii Boschma, and an
undescribed species, Compora paucisepta Broch, Sporadopora dichotoma
Mosely, and S. mortenseni Broch. Of these, five appear to be endemic
to the Antarctic (Errinu laterorifa, E. fissurata, and an undeacribed
species, Allopora eguchii, and an undescribed species). Two other species
are known only elsewhere from southern South America, one only from
off Tristan da Cunha, one only from New Zealand, one ranges also from
South America to the Indian Ocean, one extends to the subtropics, and
one has a wide distribution even reaching the Mediterranean.
Within the Antarctic, six species are known from both East and
West Antarctica (although with some the stations from which they
have been recorded are sparse), four are known from the Scotia Arc
and the Antarctic Peninsula alone, two are as yet recorded only from
East Antarctica.
These corals have very considerable bathymetric ranges, but most
occur between 200 and 1 300 m, although Errina antarctica has been
collected from only 3& m.
D. Turbellaria
Westblad (1952) gave a useful summary of the history of work on
Turbellaria in the Antarctic. Material was collected by the Belgica, the
two French Antarctic Expeditions, the Scottish National Antarctic and
the German South Polar Expeditions. Contributions on the Turbellaria
from these expeditions have come from Boehmig (1908, 1914), Hallez
(1905, 1906, 1911, 1913), Gemmill and Leiper (1907), Bock (1931) and
Reisinger (1926). Westblad (1952) described the collections obtained
by the Swedish Antarctic Expedition except for the Kalyptorhynchia,
which were worked on by Karling (1952).
Taking all the Turbellaria together, 21 species have been recorded
from South Georgia, seven of which appear to be endemic, 11 are found
also in the Magellanic Region (and in some cases have a wider distribution) and three also reach West Antarctica. This is probably not really
indicative that South Georgia has a much more numerous Turbellarian
fauna than other parts of the Antarctic, but just that the collecting
effort in South Georgia has been greater. Two other species have been
47
species of Stylasterina as being strictly endemic, they are including
Challenger Station 320 at 37’17’5 as being in the area. This makes
comparative analysis difficult. Based upon Boschma and Lowe’s
distribution maps and text, 12 species of Stylasterina have been
recorded from the Antarctic in the sense used throughout this present
work. These are : Errina antarctica (Gray), E . gracilis von Marenzeller,
E . laterorifa Eguchi, E . aspera Gray, E . Jissurata Gray, E . labiata
Moseley, and an undescribed species, Allopora eguchii Boschma, and an
undescribed species, Compora paucisepta Broch, Sporadopora dichotoma
Mosely, and S. mortenseni Broch. Of these, five appear to be endemic
to the Antarctic (Errinu laterorifa, E. fissurata, and an undeacribed
species, Allopora eguchii, and an undescribed species). Two other species
are known only elsewhere from southern South America, one only from
off Tristan da Cunha, one only from New Zealand, one ranges also from
South America to the Indian Ocean, one extends to the subtropics, and
one has a wide distribution even reaching the Mediterranean.
Within the Antarctic, six species are known from both East and
West Antarctica (although with some the stations from which they
have been recorded are sparse), four are known from the Scotia Arc
and the Antarctic Peninsula alone, two are as yet recorded only from
East Antarctica.
These corals have very considerable bathymetric ranges, but most
occur between 200 and 1 300 m, although Errina antarctica has been
collected from only 3& m.
D. Turbellaria
Westblad (1952) gave a useful summary of the history of work on
Turbellaria in the Antarctic. Material was collected by the Belgica, the
two French Antarctic Expeditions, the Scottish National Antarctic and
the German South Polar Expeditions. Contributions on the Turbellaria
from these expeditions have come from Boehmig (1908, 1914), Hallez
(1905, 1906, 1911, 1913), Gemmill and Leiper (1907), Bock (1931) and
Reisinger (1926). Westblad (1952) described the collections obtained
by the Swedish Antarctic Expedition except for the Kalyptorhynchia,
which were worked on by Karling (1952).
Taking all the Turbellaria together, 21 species have been recorded
from South Georgia, seven of which appear to be endemic, 11 are found
also in the Magellanic Region (and in some cases have a wider distribution) and three also reach West Antarctica. This is probably not really
indicative that South Georgia has a much more numerous Turbellarian
fauna than other parts of the Antarctic, but just that the collecting
effort in South Georgia has been greater. Two other species have been