Gnath ophausia — Pequ egn at 
417 
♦ hoph auaio ingint 
FIG. 11. Captures of Gnathophausia ingens plotted 
according to depth of haul and time of day. 
1000 m. This involves 8 individuals (12%) 
in the total of 66 individuals of this species 
examined. This compares with 20 of the 34 
stations for G. ingens (59%) which were at 
less than 1000 m, and with 5 of the 22 stations 
(23%) for G. gracilis. All specimens of G. 
gigas in the Scripps collections of greater than 
100 mm body length came from depths of more 
than 2000 m. 
Closing nets used on the Discovery Expedi- 
tion (Tattersall, 1955) found immature G. 
gigas at between 650-4000 m depth. Banner 
(1947) reports on 9 specimens of G. gigas 
from the eastern Pacific off Canada at between 
400-1200 m depth, and 15 specimens off 
Alaska from depths of 300-900 m. These speci- 
mens were all smaller than 60 mm body length. 
Gnathophausia gracilis 
G. gracilis has always been described as a 
species from very deep water (greater than 
1500 m). Previous reports show that all rec- 
ords of G. gracilis were from depths greater 
than 1500 m, except for 2 young specimens 
described by Fage (1941) and Hansen (1927), 
which were from 800 m. The Scripps collec- 
tions yielded 30 individuals (collected at 5 
separate stations) from depths of less than 1000 
m, some of them greater than 100 mm in size. 
0600 9900 1200 1300 1800 210 0 2 400 0300 0600 
TIME IN HOURS 
Fig. 12. Captures of Gnathophausia gigas plotted 
according to depth of haul and time of day. 
Sno t ho p-h-'O g*ia gracilis 
Fig. 13. Captures of Gnathophausia gracilis plotted 
according to depth of haul and time of day. 
This amounts to 23% of the total of 128 in- 
dividuals of this species examined in the Scripps 
collections. The 2 most shallow depths sampled 
yielding G. gracilis were 732 m (Sta. H50-277), 
with 1 small male, and 799 m (Sta. H51-45), 
with 6 juveniles and 3 males. The average depth 
of capture from the Scripps collections was 1600 
m, ranging from 732 to 3914 m. 
Fage ( 1941 ) suggested that G. gracilis main- 
tains itself at a deeper level in the eastern por- 
