1916.] A. L. Massy :- Cephalopoda of the Indian Museum. 203 
and about equal all round, is so membranous as to be almost 
transparent, while that of the type is described as ‘‘ quite thick ” 
but the much smaller size of the present examples may account 
for the difference. It is continued up the arms, as in Appelléf’s 
(1886, _P- 8) description, ‘‘in the form of two keels on their outer 
sides.”’ The terminal organ of the hectocotylized arm resembles 
Goodrich’s illustration, and appears to have no striae in the 
concave part; the sperm canal, on the contrary, is transversely 
striate throughout. In the two largest specimens the arms are 
bent back over the head, and one or two suckers are markedly 
enlarged on the lateral arms. In the specimen M *2/° the arms 
are only partially bent over the head, the terminal organ of the 
hectocotylized arm is very short, and looks as if it was only in 
process of formation, and no suckers appear to be enlarged on the 
lateral arms; two rows of large dark chromatophores are present 
on all the arms, and on the dorsal mantle a few large, almost black, 
chromatophores are interspersed with small brown ones, while on 
the ventral mantle the large dark spots only are present, being 
placed about I mm. apart. The specimen M *'°° was found in a 
hole in a rock at low tide. 
The principal measurements are appended :— 
Specimen number ... aA M 382 Messe Ni 27s 
mm. mm. mm. 
End of body to mantle-margin 12 13 6 
oS) 3 ” ” eye i a 17 15 9 
Breadth of body _... ee I4 14 7 
CaCl sae 12 12 8 
Ist tight z arm ade A 64 B 19 less tip. 
Ama tris, x ona 2 50 24 
BTC ma ER a aX 59 44 20 
Ate ase are ae 69 48 22 
iiGie ete Se a 60 44 20 
2nd ,, if 508 oe 71 5S 22 less tip. 
Bical g 5 aoe . 68 51 22 
Abhi, BM ae 62 AA 22 
Hectocotylus ae Bs: 4 62-2 62. S25 
Length of funnel... ANE 5 ca. 5 2°50 
Diameter of largest sucker 3 2 I 
Distribution.—Japan (Appelt, Joubin) ; Straits of Malacca, 
Kabusa Islands, Nicobar Islands, Bombay, Ceylon (Goodrich). 
Type.—In Zoological Museum, Upsala University, two females. 
Polypus fusiformis (Brock). 
Octopus fusiformis, Brock, Zool. Fahrb., V, p. 601, pl. 16, figs. 1 and 
2 (1887) ; Octopus pistformis, Hoyle, Proc. Royal Phys. Soc. Edin- 
burgh, p. 5 (merely listed) (1897). 
M £232:3 Palk Straits, south of India—Two 9. 
These are characterized by a very long narrow body with 
extremely narrow neck and prominent eyes; mantle-opening so 
wide that it is visible from above; arms of about five times the 
length of the body and tapering to very fine points; umbrella 
