Mysidacea and Euphausiacea — Banner 
137 
Thysanoessa raschii Banner, Roy. Canad. Inst., 
Trans. 28: 27, pi. 3, figs. 22a-b, 1950. 
[Includes synonymy.] 
SPECIMENS examined: Arctic Research Lab- 
oratory: No. 341, plankton tow off Point Bar- 
row, July 25, 1948; MacGinitie, collector. 
Four specimens. 
No. 482, washed ashore near Point Barrow, 
Sept. 20, 1949; MacGinitie, collector. Six 
specimens. 
No. 661, same as No. 482, Sept. 20, 1949. 
One specimen. 
No..^, plankton tow near Point Barrow, 
Alaska, 1:30 p.m., Oct. 31, 1949; MacGinitie, 
collector. One specimen. 
No..^, from gullet of Sabine gull, Elson 
Lagoon, Point Barrow, Alaska, Oct. 31, 1949; 
MacGinitie, collector. One specimen. 
No. 489, Point Barrow Base, Alaska, July 
24, 1950; Wiggins, collector. Eight specimens. 
King Crab Investigation: C-108, C-109, Point 
Moller, Alaska, May 6, 1941, thousands of 
specimens from the stomachs of about 15 cod 
{Gadus macrocephalus) each on two separate 
samplings. Some of the cod had between 500 
and 1,000 euphausids in their stomachs. 
C-117, C-119, Cape Seniavin, Alaska, May 
8, 9, 1941, less than 1,000 specimens from 
one pollock {Theragra chalcogramma)^AnA 
three cod stomachs. 
DISCUSSION: The specimens listed are with- 
in the previously known range. It is notable 
that no other euphausid was found in the 
cod and pollock stomachs. This is similar to 
the role Thysanoessa inermis (Kr0yer) played in 
the food of the 23 whales from Akutan (Ban- 
ner, 1950: 27). The difference in food may be 
due to the fact that T. raschi is an inshore 
species, whereas T. inermis is more commonly 
found beyond the margin of the continental 
shelf. 
Thysanoessa longipes Brandt 
Thysanoessa longipes Brandt, Middendorff’s 
Reise . . . 2(1): 128, pi. 6, figs. 1-4, 1851. 
Banner, Roy. Canad. Inst., 
Trans. 28: 21, 1950. 
SPECIMENS EXAMINED: Arctic Research Lab- 
oratory: No. 662, washed ashore. Point Bar- 
row, Sept. 26, 1949; MacGinitie, collector. 
One specimen. 
No. 663, same data as above. Sept. 27, 
1949. About 25 specimens, all immature. 
No..^ same data as above, July 20, 1950. 
Two specimens. 
DISCUSSION: This species was known pre- 
viously from the Point Barrow region on the 
basis of only two specimens reported by 
Schmitt (1919: 8b). 
Thysanoessa inermis (Kr0yer) 
Thysanopoda inermis Kr0yer, Gaimard’s Reise, 
pi. 7, fig. 2a, 1846. 
Thysanoessa inermis Roy. Canad. Inst., 
Trans. 28: 24, pi. 3, figs. 23a-b, 1950. 
[Includes synonymy.] 
SPECIMENS examined: Arctic Research Lab- 
oratory: No..^, along shore. Point Barrow Base, 
July 20, 1950; MacGinitie, collector. One 
specimen. 
No..^ gullet, Sabine gull, Elson Lagoon, 
Point Barrow, Aug. 26, 1950; MacGinitie, 
collector. Three or four specimens, frag- 
mentary. 
No. 489, beach at Point Barrow Base, July 
24, I95O; Wiggins, collector. One specimen. 
DISCUSSION: This species also was reported 
from the Point Barrow region by Schmitt 
(1919: 8b). 
TYPE MATERIAL OF PREVIOUSLY 
DESCRIBED SPECIES 
In my previous study of mysids and eu- 
phausids from this region, I published names 
and descriptions of a number of new species 
for which I did not designate any particular 
specimen as the type for the species. The 
type specimens have now been selected from 
the series that were used in drawing up the 
descriptions (lectotypes, therefore, from a co- 
