1g16.}| A. Ll. Massy : Cephalopoda of the Indian Museum. 215 
tency of the specimens referred to E. diaphana,. Specimen M *** 
is very young having a mantle-length of only 5 mm., the pallial 
opening is very wide and the eyes large: the siphon extends half 
way to the umbrella margin. The arms are all mutilated. The 
umbrella reaches to about the third sucker on the dorsal arms 
and is much shorter ventrally. Colour pale with a few reddish- 
brown chromatophores. This and the following have been pre- 
served in formalin. Specimen M *4** has a mantle of 8 mm. The 
third arms are the longest, and the siphon extends two-thirds 
of the distance to the umbrella margin. Colour as in specimen 
M *4*7. Probably these specimens are referrable to FE. diaphana. 
Family SEPIOLIDAE., 
Inioteuthis japonica, Verrill. 
Inioteuthis japonica, Verrill, Rep. U. S. Fish. Comm., p. 417, footnote 
(1881); Joubin, Bull. Soc. Zool. France, XXII, p. tor (1897); Berry, 
Proc. Acad. Nat. Sci. Phil., pp. 405-8, pl. 5, fig. 5 (1912a). 
M 1°972-6 Port Blair, Andaman Islands (S. W. Kemp)—Two 9, one 
young, 
The two smallest of these specimens have a mantle-leneth of 
5 and 9 mm. 
The largest female, compared with a male of J. maculosa, 
Goodrich, of similar mantle-length, shows that /. japonica has the 
nuchal commissure narrower than the length of the fin at inser- 
tion, while in J maculosa these measurements are about equal. 
The latter has a uniformly narrower body, shorter, rounder 
fins, and larger siphon than J. japonica. ‘The bell-shaped mantle 
of the latter is very marked in the large female, when viewed 
ventrally. 
In I. maculosa the chromatophores form large, dark-brown 
spots and blotches all over the body and arms, except the siphon 
and lower surface of fins. 
In I. japonica they form very minute bluish-red dots which 
become larger on the head, and the ventral surface of the fins and 
siphon is freckled with orange dots. A note on the label states 
that the specimens were bright yellow when alive. These three 
specimens of I. japonica are all a little contracted, and seem to 
have a thicker skin and harder body than J. maculosa, but these 
differences may be due to varying modes of preservation. 
The valve in the siphon is much longer in the example ex- 
amined than in that of J. maculosa. 
The measurements of this large female are appended :— 
Specimen number ue Ew _M 19975 
mm, 
End of body to mantle-margin 13 
Breadth of body Be | ; ge 
- ,, head " an i Re TG 
Nuchal commissure ts 5 
Fin length at insertion ... ot as 6° 
