322 University of California Publications in Zoology [Vou.9 
Table 53 which follows deals with the vertical closing hauls. 
It is similar to table 52, but the numbers in the right-hand 
columns (B-G) represent the numbers of animals per 100 fathom 
hauls. 
TABLE 53 
Distribution of the six species that did not oceur at the surface, as shown by 
the vertical closing nets, day and night hauls compared 
I. 6-12 a.m., 4-6 p.m. 
A B Cc D E BP G 
Total 
Depth hauls E.t. E.g. G.u. Pat: S.f. S.m. 
al 40-0 106 O20 0 (y  ) OPO 0 Om a0) 
2. 100-40 39 O) @) 0 0 0 Oo 0 OVO 
3. 200-100 12 0 0 1 il 1 1 0 0 1 1 0 0 
4, 250-200 6 5 10 8 16 6 12 16 32 18 36 3 6 
5. 300-250 4 11 22 12 24 6 12 t 4 6 12 4 8 
II. 2-6 a.m., 6-8 p.m. (below 50 f.) 
6. 40-0 100 0 0 0 0 0 0 0 0 0 0 0 
7 100-40 34 0 0 0 0 0 1 2 15) 25, 0 0 
8. 200-100 7 0 5 5 0 0 1 1 6 6 2 2 
2 250-200 1 0 0 0 0 0 0 0 0 0 0 0 0 
10. 300-250 1 0 0 0 0 0 0 0 0 0 0 0 0 
Consideration of tables 52 and 53 will show that there is 
some evidence of an upward movement at night on the part of 
these species which are all below 100 fathoms during the day. 
It is true that not all of the species were taken above 100 fathoms 
at night, but the general fact of decreased numbers below 100 
fathoms at night in all eases and of increased numbers by day 
above 100 fathoms in some eases is suggestive. The number of 
all closing hauls above 100 fathoms during the day is many 
times greater than the number of night hauls, yet no animals 
were taken during the day above 100 fathoms. This evidence, 
it must be admitted, is unsatisfactory, yet tables 52 and 53 taken 
together at least suggest that the species which never came to 
the surface are found in deeper water by day than by night. 
Our knowledge of the usual conditions under which these 
species live during the day is so shght that there is not even 
a suggestion to offer as to why they do not come to the surface. 
