1916.] A.L. Massy : Cephalopoda of the Indian Museum. 201 
This resembles the type male in the British Museum very 
closely but is a little lighter in colour on the lower surface. 
The hectocotylus is exactly like that of the type. It will be 
remembered that the latter has four enlarged suckers on each 
lateral arm; the present specimen does not show these probably 
because the arms are in course of regeneration. ‘The first and third 
pairs are the most slender at the base and the second and fourth 
the strongest and thickest. 
The web is very short, highest laterally and lowest ventrally. 
The funnel organ appears to be W-shaped but is not in good 
condition. A few very small tubercles are present on the head and 
dorsal mantle. Colour buff densely covered above with very 
minute dark brown chromatophores, paler beneath. The dark 
dorsal surface of arms presents a strong contrast to the flesh- 
coloured ventral surface. 
The principal measurements are appended :— 
mm. 
End of body to mantlesmargin —... es Py Gl 
ip Wea hoes MLE 5 Es 35 
Eye to umbrella ae aoe ae aes 16 
Breadth of body 3 a SE oop Be 
ist right arm | a a g2 
PHING lieder aaa ai rs aera 
Sr ee ees se < Ww ; 73 
tibetan ates: an 200 
Est lett = 4; +. A he 86 
DING eae a “ ire 1 en's 
Bes, my; a e400 
rie eee ee er, es ais ase 
Hectocotylus Ke aa nan Bo I 
Diameter of largest sucker e. 1) As 2 
Distrtbution.—Pacific Insular Region; Indian Ocean. 
Tyfe.—In British Museum, one male, two females. 
Polypus bandensis (Hoyle). 
Octopus bandensis, Hoyle, Diagnoses 1, p. 227; Prelim. Rep., I, p. 109 
(1885) ; ‘Challenger’ Rep., XVI (Cephalopoda), p. 96, pl. 7, figs. 2 
and to (1886); Appelléf, Abh. d. Senckenb. naturf. Ges., XXIV, 
p- 506 (1808). 
M *129° ‘Investigator’ station 152; 12-xli-1893, 113 miles S. 83° W. of 
Colombo Lt., 263 fathoms—One ?. 
The extreme length of the third arms is the most important 
character of this species. 
The present example has a roundish body separated from the 
head by a constriction, and the head is wider than the body owing 
to the large prominent eyes. The third arms are about six times 
the length of the mantle and nearly twice as long as any of the 
other arms. Umbrella very short and membranous, about equal 
all round, continued on the outer surface of the arms, and forming 


| A study of the base of the arms shows that the short ones are evidently in 
course of regeneration. 
