II 
440 
eye prominences not noticeable; that at rest 
there was a horizontal curvature of the distal 
portion of the arms anteriorly and that the 
oral surface was not completely in contact with 
the bottom; that the suckers were ineffective 
or not used by the animal to hold to the bot- 
tom; that contraction and expansion of the um- 
brella together with coordinated fin movement 
were the means of movement, with ejection of 
water from the siphon being of very minor 
importance; and that the color in life was dark 
reddish brown with the bluish blotches being 
the result of rough treatment in the trawl. 
There was no concentric streaking. 
6. Hectocotylization of the dorsal arm-pair 
can be detected in all males, regardless of 
maturity. 
7. The total egg count of mature females 
examined ranged from 225 to 475 eggs, with 
the largest egg found measuring 11 by 6 mm 
at the greatest diameters. Ovulation was tenta- 
tively concluded to occur in the winter. 
8. Gut-content analysis showed that these 
animals feed on small Crustacea, mostly large 
copepods and small mysids. A brown organic 
substance was found in several stomachs. 
9. The benthic existence of this species was 
further substantiated from catch records and 
observational data. 
the presence of the large ineffective suckers 
10. The specialized locomotory behavior and 
further substantiate the degenerate and special- 
ized nature of Opisthoteuthis. 
ADDENDUM 
After the present paper was submitted, Dr. 
D. B. Quayle, Fisheries Research Board of Can- 
ada, Nanaimo, B. C, provided the author with 
the following two additional records from the 
northeastern Pacific: (1) Off Unimak Island, 
Alaska (53°39'N, 164°44'W) at 238-252 
fathoms on August 13, 1964; and (2) off north- 
ern Washington (47°58'N, 125°47'W) at 
505-510 fathoms on September 6, 1964. The 
latter record extends the bathymetric range to 
510 fathoms. 
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