68
THE BIOLOQY OF EUPHAUSIIDS
between 5"s to 26"S, 6O"E to 95"E. Baker records it at 30"s extending
to 48"s. Lives a t different depths in different areas during the day ;
0 to 300 m off Japan and in the Subantarctic ; deeper than 500 m in the
Indo-Australian Archipelago. Length 22-26 mm. (Sars, 1885 ; Hansen,
1915, 1916; Tattersall, 1924, 1925, 1939; Illig, 1930; Rustad, 1930;
John, 1936 ; Boden, 1954 ; Nepgen, 1957 ; Brinton, 1962a ; Ponomareva,
1963 ; Baker, 1965.)
Euphausia similis var. armata Hansen, 1911
E. sirnilis var. armata Hansen, 1911: 25-26, fig. 7 ; Tattersall, 1924: 19;
1925: 7 ; Illig, 1930: 498; John, 1936: 236-238, figs. 24c, 25-26. E. sirnilis var.
lobata Zimmer, 1914 : 425, pl. xxvi, fig. 59. E. sirnilis var. crassirostris Hansen,
1910 : 94, pl. xiv, fig. 2, a-i ; Tattersall, 1925 : 7 ; Illig, 1930 : 498 ; John, 1936 :
238-239.
This species has almost the same distribution as that of E . similis
except that it has not been found in the northwestern Pacific, the
nearest records being from the Bay of Bengal and South of Sumatra
(Fig. 22). All other records are south of 30"s in the Subantarctic waters
of the Atlantic, Pacific and Indian Oceans where it occurs together with
E. similis. It tends to live nearer the surface than E . similis and grows
to a length of 22-26 mm. (Tattersall, 1924; John, 1936; Boden, 1954;
Nepgen, 1957 ; Brinton, 1962a; Baker, 1965; Grindley and Penrith,
1965.)
Euphausia mucronata G. 0. Sam, 1883
E . mucronata G. 0. Sars, 188313: 16-17; 1885: 87-89, pl. xv, figs. 9-11;
Hansen, 1911: 33-34, fig. 12; 1912: 255-257, pl. ix, fig. 3, a-g.
This species is restricted to the region of the Peru Current between
35"s and 37.5'5 (Fig. 22). Unlike N . simplex and E . lamelligera, it does
not extend westwards to the Galapagos Islands. It probably lives a t
depths above 300m during the day, rising to the surface a t night.
Length 17 mm. (Brinton, 1962a.)
Euphausia sibogae Hansen, 1908
E. sibogae Hansen, 190%: 158; 1910: 101-103, pl. xiv, fig. 7, a-d.
E. sibogae, along with the closely related species E. distinguenda and
E. lamelligera, have limited ranges within the tropical regions (Fig. 22).
E . sibogae has only been found in the East Indian Archipelago and
outside the Great Barrier Reef Lagoon off northeast Australia.
Probably lives close to the surface. Length about 8 mm. (Tattersall,
1936a ; Brinton, 1962a.)
THE BIOLOQY OF EUPHAUSIIDS
between 5"s to 26"S, 6O"E to 95"E. Baker records it at 30"s extending
to 48"s. Lives a t different depths in different areas during the day ;
0 to 300 m off Japan and in the Subantarctic ; deeper than 500 m in the
Indo-Australian Archipelago. Length 22-26 mm. (Sars, 1885 ; Hansen,
1915, 1916; Tattersall, 1924, 1925, 1939; Illig, 1930; Rustad, 1930;
John, 1936 ; Boden, 1954 ; Nepgen, 1957 ; Brinton, 1962a ; Ponomareva,
1963 ; Baker, 1965.)
Euphausia similis var. armata Hansen, 1911
E. sirnilis var. armata Hansen, 1911: 25-26, fig. 7 ; Tattersall, 1924: 19;
1925: 7 ; Illig, 1930: 498; John, 1936: 236-238, figs. 24c, 25-26. E. sirnilis var.
lobata Zimmer, 1914 : 425, pl. xxvi, fig. 59. E. sirnilis var. crassirostris Hansen,
1910 : 94, pl. xiv, fig. 2, a-i ; Tattersall, 1925 : 7 ; Illig, 1930 : 498 ; John, 1936 :
238-239.
This species has almost the same distribution as that of E . similis
except that it has not been found in the northwestern Pacific, the
nearest records being from the Bay of Bengal and South of Sumatra
(Fig. 22). All other records are south of 30"s in the Subantarctic waters
of the Atlantic, Pacific and Indian Oceans where it occurs together with
E. similis. It tends to live nearer the surface than E . similis and grows
to a length of 22-26 mm. (Tattersall, 1924; John, 1936; Boden, 1954;
Nepgen, 1957 ; Brinton, 1962a; Baker, 1965; Grindley and Penrith,
1965.)
Euphausia mucronata G. 0. Sam, 1883
E . mucronata G. 0. Sars, 188313: 16-17; 1885: 87-89, pl. xv, figs. 9-11;
Hansen, 1911: 33-34, fig. 12; 1912: 255-257, pl. ix, fig. 3, a-g.
This species is restricted to the region of the Peru Current between
35"s and 37.5'5 (Fig. 22). Unlike N . simplex and E . lamelligera, it does
not extend westwards to the Galapagos Islands. It probably lives a t
depths above 300m during the day, rising to the surface a t night.
Length 17 mm. (Brinton, 1962a.)
Euphausia sibogae Hansen, 1908
E. sibogae Hansen, 190%: 158; 1910: 101-103, pl. xiv, fig. 7, a-d.
E. sibogae, along with the closely related species E. distinguenda and
E. lamelligera, have limited ranges within the tropical regions (Fig. 22).
E . sibogae has only been found in the East Indian Archipelago and
outside the Great Barrier Reef Lagoon off northeast Australia.
Probably lives close to the surface. Length about 8 mm. (Tattersall,
1936a ; Brinton, 1962a.)