126 
Bui. 201: 81-86, figs. 21-22, 1951. [Re- 
described.] 
SPECIMENS EXAMINED: Numerous adult 
specimens of both sexes in sand in intertidal 
zone, Pismo Beach, Calif, (about 50 miles 
north of Point Conception), Nov., 1945; A. 
H. Banner, collector. The specimens were 
found burrowing in the sand in the wave- 
washed portion of the beach. 
DISCUSSION: The specimens listed above 
and those previously examined and reported 
upon agree quite well with TattersalPs re- 
description and with his criteria for the sep- 
aration of A. maculata (Holmes) from A. 
grehnitzkii . However, in both groups of spec- 
imens the posterior dorsal tooth of the fifth 
abdominal segment was present, a character- 
istic Tattersall reported to be unique to A. 
maadata. Therefore, reliance should not be 
placed upon that to separate the two species. 
My previous records for the species reached 
only to the southern portion of the state of 
Washington, and those of Tattersall reached 
only to Half Moon Bay, immediately south 
of San Francisco, California; the present rec- 
ord, therefore, is the most southerly for the 
species. It is noteworthy that, during the 
month in which this collection was made at 
Pismo Beach, many other beaches to the 
south, especially in the Los Angeles area, were 
investigated and neither A. grehnitzkii not A. 
maculata were found. 
Mysis oculata (Fabricius) 
Cancer oculatus Fabricius, Fauna Groenlandica, 
pp. 245-246, 1780. 
Pugetomysis litoralis Banner, Roy. Canad. Inst., 
Trans. 27: 105, pi. 6, figs. 18a-k, 1948. 
Mysis oculata Tattersall, U. S. Natl. Mus., Bui. 
201: 165-167, fig. 61, 1951. [Redescribed.] 
SPECIMENS EXAMINED: Arctic Research Lab- 
oratory: No. 492, washed ashore near Point 
Barrow, Alaska, Sept. 22, 1949; MacGinitie, 
collector. One immature female. 
No. 659, plankton tow off Point Barrow, 
Alaska, Oct. 31, 1949; MacGinitie, collector. 
PACIFIC SCIENCE, Vol. VIII, April, 1954 
About 20 specimens, immature males and 1 
females, mature females. ^ 
No. 660, plankton tow off Point Barrow, ; 
Alaska, in churning water, evening. Sept. 1, ! 
1949; MacGinitie, collector. Four immature j: 
males and females. j 
No..^, plankton tow off Point Barrow, Alas- 
ka, July 23, 1948; MacGinitie, collector. Ten 
larval forms. I 
No. 489, beach, Point Barrow, Alaska, July | 
24, I95O; Wiggins, collector. Five immature j 
males and females. | 
Red Station 2. Dredged at 70°08'N., 143°- ] 
54'W., 1 specimen. . | 
Red Station 3. Dredged at 70°03'N., 145°- ; 
14'W., approximately 150 specimens. i 
Red Station 4. Dredged at 70°12'N., 145°- | 
55 'W., 6 specimens. 
Red Station 5. Dredged at 70°11'N., 146°- 
15 'W., 177 specimens. 
Red Station 6. Dredged at 70°15'N., 146°- 
50'W., approximately 150 specimens. 
Red Station 7. Dredged at 70°26'N., 147°- 
55 'W., approximately 100 specimens. 
Red Station 8. Dredged at 70°31'N., 148°- 
50'W., 26 specimens. 
Red Station 10. Dredged at 70°34'N., 150°- 
15 'W., approximately 100 specimens. 
Red Station 11. Dredged at 70°43^N., 150°- 
59'W., approximately 100 specimens. 
Red Station 12. Dredged at 70°40'N., 151°- 
50'W., 17 specimens. 
Red Station 15. Dredged at 70°57'N., 153°- 
15 'W., 1 specimen. 
Red Station 16. Dredged at 70°57'N., 154°- 
16'W., 5 specimens. 
Red Station 18. Dredged at 71°13'N., 155°- 
48 'W., 15 specimens. 
The stations of the "Red” were taken be- 
tween August 9 and 12, 1953. The depths 
varied from 9 to 42 feet; the surface tem- 
peratures from 2.6°C. to 4.8°C.; the bottom 
temperatures from ~3.5°C. to 3.2°C.; the 
surface salinity from 8.87 0/00 to 23.48 0/00; 
the bottom salinity from 24.33 0/00 to 30.61 
0/00; the bottoms were of mud, sand, gravel. 
