84 
M. SASAKI. 
^\Characters 
Specimens^^ 
Mantle-length 
Approximate 
number of 
eggs 
Number of spermatopliores 
m m. 
left 
right 
12 
62.5 
720 
4 
12 
62.5 
0 
900 
7 
5 
H 
62.0 
960 
8 
7 
15 
DO. 8 
1,200 
3 
3 
10 
00.5 
950 
6 
5 
17 
60.0 
4ÖO 
6 
6 
18 
=;8.i; 
470 
7 
6 
19 
56.8 
1,070 
8 
7 
20 
55-6 
730 
9 
5 
21 
55-0 
850 
5 
I 
22 
53-0 
860 
5 
3 
23 
53-0 
720 
8 
9 
24 
52.0 
950 
6 
8 
25 
46.0 
730 
8 
8 
Such a diversity in the number of the mature eggs according to the in- 
dividuals is attributable either to their premature condition or to their dis- 
charged effect, but here the latter cause is more reasonable to explain the fact. 
That is to say, the diversity is due to the fact that they are in the midst of 
the spawning season. 
7. Male Genital Organ. 
The anatomical relation of the male genital organ does not differ on the 
whole from that occurring generally in the Enoploteuthidae. The number of 
the spermatophores in Needham's sac differs according to the individuals, and 
there are 73 in the fully extended sac of a male. 
The sperrnatophore (PI. II, fig. 7) examined under the microscope shows 
a delicate organ covered with an outer sheath. This organ consists of 3 parts : 
a packet of spermatozoa which fills nearly i/io of the outer sheath of the 
sperrnatophore (PI. II, fig. 7, A) ; a long elastic spiral spring (ibid. fig. 7, B) ; 
and a tubular sheath connecting the preceding 2 parts (ibid. fig. 7, C). And 
