1916.| A. L. Massy : Cephalopoda of the Indian Museum. 193 
closely granulated all over, including inside of arms and umbrella; 
colour buff with minute dark chromatophores on dorsal surface of 
mantle and head. Specimen M **?° is a dried-up sand-coated 
specimen, but closely resembles a female from Yokohama in the 
British Museum which was got by the ‘ Challenger’ Expedition. 
It differs a good deal from specimen M “{*, but like it, has the 
first pair of arms the longest and thickest. Enlarged suckers are 
present on the four upper arms. ‘The sperm canal is not striated. 
The hectocotylus is mutilated, but was probably very small and 
narrower than the part of arm immediately preceding it. The 
funnel is indented at the apex but does not extend so far as in 
specimen M *Y*. The umbrella is about one-seventh the length 
of the arms and is much higher dorsally than ventrally. It does 
not seem to extend up the arms, which are, however, much 
shrivelled and each possesses a remarkable dark line on the 
dorsal surface. A distinct trace of this line occurs in the 
Yokohama specimen, but it is absent in specimen M *{*. 
The principal measurements are appended :— 
Specimen number .., ae .. M £93 M £220 
mm. mm. 
End of body to mantle-margin ... a 19 32 
MiRad hie We EY Clon. Hg ioe 28 43 
Eye to umbrella Ee ee BF 2, 
Breadth of body... aif Be 20 23 
, ,, head e ie Bs 21 20 
Ist right arm ig; x sie 137 mutilated. 
PH ING | Saree ees ee # 133 170 
3 fo agen re 2 de 62 83 
Aad se Sao Sh oa sii Je go 137 
IS WEE yy id oe i 145 196 
and ,, r 128 146 less tip. 
intel ws ir nae x 105 153 
Ath , 87 148 
Hectocotylus a mutilated. 
Length of funnel Py 17 15 
Diameter of largest sucker nee 3 5 
The female from the Gulf of Siam, which was received too 
late to incorporate full particulars, has the mantle 44 mm. long. . 
Distribution.—Mediterranean, Azores, Canary Islands, Red 
Sea, Indo-Malayan Region, Japan, Pacific Ocean. 
Polypus areolatus (de Haan). 
Octopus areolatus, de Haan MS., 1835 (fide d’Orbigny) ; d’Orbigny 
and Férussac, Céphalopodes acétabuliféres, p. 65 (1838), p. 186 (1845) ; 
Hoyle, * Challenger’ Rep. XVI (Cephalopoda), pp. 36-88, pl. 3, figs. 
6,7 (1886); Brock, Zool. Fahrb., 1, pp. 610-611 (1887) ; Ortmann, 
Zool. Fahrb., Il, p. 662 (1888) ; Joubin, Revue Suisse Zool., I, 
p- 28 (1894) ; Notes Leyden Mus., XX, p. 22 (1898) ; Octopus ocellatus, 
Gray, Cat. Moll. B.M. part 1, p.15 (1849); Appellof, K. Svensk. 
Vetensk. Akad. Handl., XXI, p. 8, pl. 1, figs. 1, 3 (1886); Octopus 
brocki, Ortmann, Zool. Fahrb., V, p. 645 (1888) ; Polypus areolatus, 
Hoyle, Bull. Mus. Comp. Zool., XLILI, p. 16 (1904) ; Wiilker. Abdh. 
d. I. Kl.d.k, Ak. d. Wiss. 111 Supple.-Bd., I Abh., p. 6 (1910); Berry 
Proc. Acad. Nat. Sci. Phi, pp. 393-390, text-fig. 1 (1912a). 
