56
THE BIOLOGY O F EUPHAUSIIDS
certain areas. (Sars, 1885; Tattersall, 1906, 1936b, 1939; Stebbing,
1910; Hansen, 1916; Illig, 1930; Torelli, 1934; Sheard, 1953; Boden,
1954; Wickstead, 1961 ; Brinton, 1962a; Ponomareva, 1963, 1964,
1968.)
Pseudeuphausia sinica Wang and Chen, 1963
P. sinica Wang and Chen, 1963 : 353-359, pl. 1 ; Wang, 1965 : 35-53, pls. 1-5.
This species is confined to the coastal regions of the East China Sea
and the Southern Yellow Sea (Fig. 16). Its area of distribution is
contained within that of the closely related species, P . latifrons, and
their detailed separate distributions have not yet been determined
(Wang and Chen, 1963 ; Wang, 1965.)
Genus Euphausia Dana, 1852 : 639
Euphausia americana Hansen, 191 1
E. americana Hansen, 1911 : 23-24, fig. 6.
Only occurs in the Atlantic where it extends northwards on the
western side to north of Bermuda and southwards down the coast of
South America to about 20"s (Fig. 17). Illig recorded it west of
Portugal but all other eastern records are from the coast of West Africa
where it is found southwards to about 10"s. Also found in area of
Cape Verde Islands and over much of the area between South America
and northwest Africa. Usually occurs close to the surface but has been
taken from deeper levels. It is replaced in more coastal regions by
E . krohnii. Length 8mm. (Tattersall, 1913, 1924, 1927, 1 9 3 6 ~ ;
Hansen, 1915; Illig, 1930; Leavitt, 1935, 1938; Moore, 1950, 1952;
Lewis, 1954; Boden, 1961a; Evans, 1961; Legar6, 1961.)
Euphausia eximia Hansen, 1911
E. ezimia Hansen, 1911 : 23, fig. 5 ; 1912 : 230-233, pl. vii, fig. 2, a-g ; Boden
This species was formerly only recorded from the eastern tropical
Pacific between 32"N to 34"N, occasionally 36"N, and about 30"s but
more recently, Boden found it off Northwest Africa and Bacescu and
Mayer throughout the Mediterranean (Fig. 17). Only slight morphological differences were found between specimens from the Pacific and
those from off West Africa. Pacific: most numerous in the oceanic
waters west of Baja California, in the southern half of the Gulf of
California, off Costa Rica, in the Southern Equatorial Current from the
Galapagos Islands to 1 lO"W, and off southern Peru in the Peru Current.
el al., 1955: 331-333, fig. 23.
THE BIOLOGY O F EUPHAUSIIDS
certain areas. (Sars, 1885; Tattersall, 1906, 1936b, 1939; Stebbing,
1910; Hansen, 1916; Illig, 1930; Torelli, 1934; Sheard, 1953; Boden,
1954; Wickstead, 1961 ; Brinton, 1962a; Ponomareva, 1963, 1964,
1968.)
Pseudeuphausia sinica Wang and Chen, 1963
P. sinica Wang and Chen, 1963 : 353-359, pl. 1 ; Wang, 1965 : 35-53, pls. 1-5.
This species is confined to the coastal regions of the East China Sea
and the Southern Yellow Sea (Fig. 16). Its area of distribution is
contained within that of the closely related species, P . latifrons, and
their detailed separate distributions have not yet been determined
(Wang and Chen, 1963 ; Wang, 1965.)
Genus Euphausia Dana, 1852 : 639
Euphausia americana Hansen, 191 1
E. americana Hansen, 1911 : 23-24, fig. 6.
Only occurs in the Atlantic where it extends northwards on the
western side to north of Bermuda and southwards down the coast of
South America to about 20"s (Fig. 17). Illig recorded it west of
Portugal but all other eastern records are from the coast of West Africa
where it is found southwards to about 10"s. Also found in area of
Cape Verde Islands and over much of the area between South America
and northwest Africa. Usually occurs close to the surface but has been
taken from deeper levels. It is replaced in more coastal regions by
E . krohnii. Length 8mm. (Tattersall, 1913, 1924, 1927, 1 9 3 6 ~ ;
Hansen, 1915; Illig, 1930; Leavitt, 1935, 1938; Moore, 1950, 1952;
Lewis, 1954; Boden, 1961a; Evans, 1961; Legar6, 1961.)
Euphausia eximia Hansen, 1911
E. ezimia Hansen, 1911 : 23, fig. 5 ; 1912 : 230-233, pl. vii, fig. 2, a-g ; Boden
This species was formerly only recorded from the eastern tropical
Pacific between 32"N to 34"N, occasionally 36"N, and about 30"s but
more recently, Boden found it off Northwest Africa and Bacescu and
Mayer throughout the Mediterranean (Fig. 17). Only slight morphological differences were found between specimens from the Pacific and
those from off West Africa. Pacific: most numerous in the oceanic
waters west of Baja California, in the southern half of the Gulf of
California, off Costa Rica, in the Southern Equatorial Current from the
Galapagos Islands to 1 lO"W, and off southern Peru in the Peru Current.
el al., 1955: 331-333, fig. 23.