366 



M. SASAKI : 



finely wrinkled, evenly and uniformly warty. Umbrella poorly developed, 

 extending for about % the length of arms. Funnel organ composed of a 

 thin, W-shaped cushion. 



Arms subequal ; second pair the longest by a little. Suckers thickly 

 set in double series, except the three at base which are uniserial. 



Branchial leaflets number 9 or 10 in each gill. Vagina thick, short, 

 nearly straight, terminating far posterior to anus. Ink-duct runs straight to 

 anus ; visible in its entire extent from outside the visceral sac. Spermato- 

 phore very small, about 12mm. long; its spermatic part 5 mm. long, 

 containing about 65 coils of sperm cord. 



One male and female obtained from Prov. Satsuma. They are preserv- 

 ed in the Agric. Coll. of Sapporo. 



Polypus foHfjisi arfict'HS sp. nov. 



Adult male attains about 300 mm. in total length. Dorsal surface of 

 body, head, and bases of arms covered with single-headed roundish warts of 

 somewhat various sizes, fcund in thickest distribution and best development 

 above eyes ; one of the supraorbital warts on each side is a little larger than 

 the others. Umbrella broad, generally extending about l J i up the length 

 of arms and thereafter continued as narrow contractile membrane along the 

 ventral outer edge of each arm to the subterminal parts. 



Arms slender, formula : i>2 =3=4 ; the longest 5—6 times the mantle- 

 length. Suckers biserial, except the three at base which are uniserial ; 

 those of 2 or 3 transverse series near umbrella margin conspicuously en- 

 larged. Right third arm, though prominently hectocotylized, about equally 

 long as the left third ; suckers on the normal part in 49-60 transverse rows; 

 the hectocotylized part slender, 1 j la the entire length of the arm, of the 

 same structural type as that of Polypus hongkoiigmsis (Hoyle). 



Funnel organ thickly W-shaped. Branchial leaflets count 2C-23 in each 

 gill. Coecal appendage of stomach reniform. First part of ink-duct hidden 

 in liver. 



