52
R. K. DELL
widely scattered localities. This figure includes the pelagic forms, which
are largely cosmopolitan.
As with many other Antarctic groups of animals some species of
polychaetes prove to have very wide depth ranges. Examples of some
of the most marked are :
Barrukia cristata (Willey) 3.5-800 m
Eucranta mollis (McIntosh) 40-900 m
Harmothiie crosetensis (McIntosh)
Notomustus latericeus Sars 0-1 777 m
Isocirrus yungi Gravier 93-1 080 m
Amage sculpta Ehlers 244-1 080 m
Anobothrus patagonicus (Kinberg)
Neosabellides elongatus (Ehlers)
Eunoe abyssorum McIntosh
Leaena antarctica McIntosh
187-2 926 m
8-3 397 m
97-1 000 m
83-4 755 m
13-3 612 m.
Some Antarctic polychaetes grow to a very large size for the group.
Hartman (1966, p. 154) listed 14 species which reach between 150 and
300 mm, and one, Ophioglycera ezimia (Ehlers) reaches a length of
760 mm.
Knox (1962) listed 15 species of polychaetes collected at the
Australian Antarctic base at Mawson, MacRobertson Land. The
Antarctic and Subantarctic species of the families Phyllodocidae and
Aphroditidae collected by the Soviet Antarctic expeditions were
described by Ushakov (1962). This collection included 33 new species.
The family Aphroditidae is better represented in the Antarctic than
other polychaet families, many species occur massed in large numbers.
Ushakov considered that about 50 species occurred in Antarctic (including Subantarctic) waters, with four endemic genera, Uorekia, Barrukia,
Polyeunoa and Macelloides. The family includes such characteristically
Antarctic species as : Laetmtonice producta Grube, Harmothiie spinosa
Kinberg (possibly the most ubiquitous Antarctic polychaete), H .
crosetensis (McIntosh), Hermadion magalhaensis Kinberg, and BarrzLkia
cristata (Willey ) .
Members of the Phyllodocidae are much less important, but are
represented by about 20 species. Almost all the species of these two
families occurring south of 450-50°S are endemic to this area. As for
so many other groups, the Magellan region appears to act as an area of
faunal exchange between the temperate regions of the southern hemisphere and Antarctica. Ushakov provides descriptions of all the
specimens collected by the Soviet expedition, and lists known ranges.
Levenstein (1964) dealt with the families Terebellidae and Tricho-
R. K. DELL
widely scattered localities. This figure includes the pelagic forms, which
are largely cosmopolitan.
As with many other Antarctic groups of animals some species of
polychaetes prove to have very wide depth ranges. Examples of some
of the most marked are :
Barrukia cristata (Willey) 3.5-800 m
Eucranta mollis (McIntosh) 40-900 m
Harmothiie crosetensis (McIntosh)
Notomustus latericeus Sars 0-1 777 m
Isocirrus yungi Gravier 93-1 080 m
Amage sculpta Ehlers 244-1 080 m
Anobothrus patagonicus (Kinberg)
Neosabellides elongatus (Ehlers)
Eunoe abyssorum McIntosh
Leaena antarctica McIntosh
187-2 926 m
8-3 397 m
97-1 000 m
83-4 755 m
13-3 612 m.
Some Antarctic polychaetes grow to a very large size for the group.
Hartman (1966, p. 154) listed 14 species which reach between 150 and
300 mm, and one, Ophioglycera ezimia (Ehlers) reaches a length of
760 mm.
Knox (1962) listed 15 species of polychaetes collected at the
Australian Antarctic base at Mawson, MacRobertson Land. The
Antarctic and Subantarctic species of the families Phyllodocidae and
Aphroditidae collected by the Soviet Antarctic expeditions were
described by Ushakov (1962). This collection included 33 new species.
The family Aphroditidae is better represented in the Antarctic than
other polychaet families, many species occur massed in large numbers.
Ushakov considered that about 50 species occurred in Antarctic (including Subantarctic) waters, with four endemic genera, Uorekia, Barrukia,
Polyeunoa and Macelloides. The family includes such characteristically
Antarctic species as : Laetmtonice producta Grube, Harmothiie spinosa
Kinberg (possibly the most ubiquitous Antarctic polychaete), H .
crosetensis (McIntosh), Hermadion magalhaensis Kinberg, and BarrzLkia
cristata (Willey ) .
Members of the Phyllodocidae are much less important, but are
represented by about 20 species. Almost all the species of these two
families occurring south of 450-50°S are endemic to this area. As for
so many other groups, the Magellan region appears to act as an area of
faunal exchange between the temperate regions of the southern hemisphere and Antarctica. Ushakov provides descriptions of all the
specimens collected by the Soviet expedition, and lists known ranges.
Levenstein (1964) dealt with the families Terebellidae and Tricho-