6\6 



MADOKA SASAKI : 



Remarks. This species stands in nearest relationship to S. 

 andreanoides Hoyle, but differs from this in the following points : 

 The mantle is twice as large as that of S. andreanoides (as com- 

 pared in fully mature specimens). The horny ring of distal arm- 

 suckers is distinctly denticulated, while in S. andreanoides it presents 

 a smooth edge. The dorsal surface of mantle is marked with large 

 brown spots which are absent in the latter species. The tentacles are 

 less slender, while the shell is on the ventral surface only slightly 

 convex instead of being strongly so and the median groove irregularly 

 running, not straight. 



34. Sepia (Doratosepion) tokyoensis Ortmann 1888. 



Local name : Suji-ika (Awa). 



Sepia tokyoensis, Ortmann 1888, p. 653, pi. xxiii, fig. 3 (Tòkyo 



Bay). — Wülker 1910, p. 14 (Misaki). 

 Sepia {Doratosepion) tokyoensis, Berry 1912a, p. 423 (Aomori). 

 List of specimens examined. 



Specimens 



Mantle-length 



Locality 



Date 



Where preserved 



6£ 



30-74 mm 



Tòkyo market 





Sci. Coll. 





68-88 mm 



Gyôtoku, Shimo-osa 



April 20, 1906 



Sci. Coll. 



3£ 





Awa 





Imp. Mus. 



In dimensions the above specimens agree well with Ortmann's, 

 but differ from these in the following respects : 1) The longest arm 

 is the first and the shortest the fourth, while in Ortmann's specimens 

 the two were equally long. 2) The distal parts of all the arms are 

 rather thick and not so thin as in the latter. 3) Distal suckers on 

 each arm arranged distinctly in four series, while in Ortmann's speci- 

 mens, they were nearly in two series. 4) Locular index is 26-33, 



