ANTdRUTIU BENTHOS
66
which were collected in the Subantarctic and have since been found to
inhabit Antarctic seas also. Hoek also (1907) described the barnacles
coIIected by the Belgica. Gruvel (1906a) published a preliminary paper
on the barnacles collected by the Discovery and followed this (1907)
with a complete account. He also wrote up the German South Polar
collections (1909), and listed the cirripedes collected by the second
French Antarctic expedition (1911). The collections made by the
Terra Nova were written up by Borradaile (1916). Nilsson-Cantell
contributed four papers on Antarctic cirripedes, the first (1926) b a e d
on material from the Ross Sea, followed (1930%) by a paper on some
South Georgian species, and two (1930b, 1939) on the barnacles collected during the Discovery Investigations. Bage (1938) wrote the
account of the Australasian Antarctic collections.
Heegaard (1951) described an ascothoracican, parasitic on ophiuroids at South Georgia. Boschma (1962), dealing with the Rhizocephala
from the Discovery collections, showed that Briarosaccus callosua
Boschma, known already as a parasite of lithodid crabs, also occurred
at South Georgia. Material collected on Soviet expeditions has been
written up by Zevina (1964, 1968). Utinomi (1965) recorded specimens
of Hexelasma collected by Japanese Antarctic endeavours. Weisbord
(1965, 1967) recorded new localities for Hexelasma, and discussed its
distribution and geological significance. Ross and Newman (1969) contributed a general account of the composition of the Antarctic cirripede
fauna, its distribution and relationships, and promptly made this
contribution largely obsolete by a monograph (Newman and Ross, 1971)
on the Antarctic forms.
The two parasitic forms recorded from South Georgia are interesting
but probably at the southern limit of such forms. The rhizocephalan
Briarosaccus callosus has been treated in considerable detail by Boschma
(1962). The species is known from off the coast of Florida and from the
Bering Sea and Magellan Strait extending to the Falklands and South
Georgia. All the records have been as parasites on a variety of lithodid
anomuran crabs. Farther south in the Scotia Arc lithodids are not
known. It will be of great interest to check if the lithodid recorded as
Paralomis spectabilis Hansen by Birstein and Vinogradov (1967) from
off Scott Island, also acts as a host to this rhizocephalan. This cirripede must really be considered a parasite of lithodida which has
extended its range to South Georgia along with a suitable host in the
shape of Paralomis granulosa (Hombron and Jacquinot).
Another parasitic form, the ascothoracican Ascothorax bulbosus was
described by Heegard (1961) as parasitic on the two ophiuroids,
Amphiura belgicae Koehler and A. microplax Mortensen. The parasite
66
which were collected in the Subantarctic and have since been found to
inhabit Antarctic seas also. Hoek also (1907) described the barnacles
coIIected by the Belgica. Gruvel (1906a) published a preliminary paper
on the barnacles collected by the Discovery and followed this (1907)
with a complete account. He also wrote up the German South Polar
collections (1909), and listed the cirripedes collected by the second
French Antarctic expedition (1911). The collections made by the
Terra Nova were written up by Borradaile (1916). Nilsson-Cantell
contributed four papers on Antarctic cirripedes, the first (1926) b a e d
on material from the Ross Sea, followed (1930%) by a paper on some
South Georgian species, and two (1930b, 1939) on the barnacles collected during the Discovery Investigations. Bage (1938) wrote the
account of the Australasian Antarctic collections.
Heegaard (1951) described an ascothoracican, parasitic on ophiuroids at South Georgia. Boschma (1962), dealing with the Rhizocephala
from the Discovery collections, showed that Briarosaccus callosua
Boschma, known already as a parasite of lithodid crabs, also occurred
at South Georgia. Material collected on Soviet expeditions has been
written up by Zevina (1964, 1968). Utinomi (1965) recorded specimens
of Hexelasma collected by Japanese Antarctic endeavours. Weisbord
(1965, 1967) recorded new localities for Hexelasma, and discussed its
distribution and geological significance. Ross and Newman (1969) contributed a general account of the composition of the Antarctic cirripede
fauna, its distribution and relationships, and promptly made this
contribution largely obsolete by a monograph (Newman and Ross, 1971)
on the Antarctic forms.
The two parasitic forms recorded from South Georgia are interesting
but probably at the southern limit of such forms. The rhizocephalan
Briarosaccus callosus has been treated in considerable detail by Boschma
(1962). The species is known from off the coast of Florida and from the
Bering Sea and Magellan Strait extending to the Falklands and South
Georgia. All the records have been as parasites on a variety of lithodid
anomuran crabs. Farther south in the Scotia Arc lithodids are not
known. It will be of great interest to check if the lithodid recorded as
Paralomis spectabilis Hansen by Birstein and Vinogradov (1967) from
off Scott Island, also acts as a host to this rhizocephalan. This cirripede must really be considered a parasite of lithodida which has
extended its range to South Georgia along with a suitable host in the
shape of Paralomis granulosa (Hombron and Jacquinot).
Another parasitic form, the ascothoracican Ascothorax bulbosus was
described by Heegard (1961) as parasitic on the two ophiuroids,
Amphiura belgicae Koehler and A. microplax Mortensen. The parasite