New Records of Mysidacea and Euphausiacea 
from the Northeastern Pacific and Adjacent Areas^ 
Albert H. Banner^ 
Since the publication of my tripartite re- 
port on the Mysidacea and Euphausiacea of 
the northeastern Pacific (1948^^, 1948^, 1950), 
some additional collections of these crusta- 
ceans from this region have been made avail- 
able to me. These collections are in three 
groups: (1) specimens collected by the King 
Crab Investigation of the U. S. Fish and Wild- 
life Service in the eastern Bering Sea in 1941, 
principally from the stomachs of codfish and 
pollock; (2) specimens collected at the Arctic 
Research Laboratory at Point Barrow, Alaska, 
from 1948 to 1952, principally by G. E. Mac- 
Ginitie and Ira L. Wiggins who were spon- 
sored by research contracts from the Office 
of Naval Research to Johns Hopkins Uni- 
versity and the California Institute of Tech- 
nology; and (3) specimens collected by 
various persons, including myself, at random 
spots from Alaska to California after 1945. 
Many of the records are within the established 
range of the species, but even these are of 
importance because not much is known about 
these animals in the Pacific and, especially, 
in Alaskan waters. Some of the records below 
are extensions of the previously known ranges. 
Two new species are described, and a genus 
and several species previously described are 
placed in synonymy. In addition, lectotypes 
are designated for the species previously de- 
scribed by me {op. cit.) from this region. 
To keep this paper as short as possible, 
rather than give the descriptions and full 
synonymy, reference will be made only to the 
original descriptions and to my previous 
1 Contribution No. 45, Hawaii Marine Laboratory. 
Manuscript received March 11, 1953. 
2 Department of Zoology and Entomology, Univ- 
ersity of Hawaii. 
study or to the monograph of Tattersall 
(1951). 
Boreomysis nobilis Sars 
Boreomysis nohilts G. O. Sars, Arch. Math. 
Naturv. 4: 428, 1879. 
Tattersall, U. S. Natl. Mus., 
BuL 201: 47, 243, fig. 6, 1951. 
SPECIMENS EXAMINED: Arctic Research Lab- 
oratory: No.?, Point Barrow, Alaska, Sept. 27, 
1948; MacGinitie, collector. Four specimens. 
The largest specimen, an immature female, 
was 38 mm. long. 
DISCUSSION: MacGinitie supplied the fol- 
lowing notes: "Specimens collected near shore 
after several days of offshore wind followed 
by upwelling. [Body] translucent white with 
a red stripe (gut) down middle of back, a red 
stomach and fnouth region. Eyes metallic 
crimson." 
Previous records of this species have been 
confined to the subarctic Atlantic Ocean and 
the adjacent regions of the Arctic Ocean; it 
has been reported as far south as Newfound- 
land (Tattersall, 1939) and as far north as 
77°N. on both coasts of Greenland (Stephen- 
sen, 1933, 1943). Its westernmost record until 
now was the western sounds leading into 
Baffin Bay (Tattersall, 1939). 
Archaeomysis grebnitzkii Czerniavsky 
Archaeomysis grebnitzkii Czerniavsky, St. Pe- 
tersbourg Nat., Trudy 12: 73, 1882; 18: pi. 
30, figs. 17-24; pi. 32, figs. 19-20, 1887. 
Banner, Roy. Canad. Inst., 
Trans. 26: 370-374, pi. 5, figs. 6a-i, 1948. 
[Redescribed.] 
Tattersall, U. S. Natl. Mus., 
125 
