No. 2310. NEW CEPHALOPODS FROM THE PACIFIC— SASAKI. 179 



ments: eye to posterior end of body 65 mm.; ventral length of 

 mantle 55 mm.; breadth of body 53 mm.; breadth of head 48 mm.; 

 length of first arms about 280 mm.; of second arms 270 mm.; of left 

 third arm 248 mm.; of right third arm 240 mm.; of right fourth arm 

 240 mm.; diameter of largest sucker on first and second arm 15 mm.; 

 on third arm 13 mm.; on fourth arm 11 mm. 



19. POLYPUS YENDOI, new species. 



Plate 24, fig. 2. 



Station 4844 (near Oki Island, Krusenstern Strait). One male 

 and female. Cat. No. 332990, U.S.N.M. 



Station 4855 (near Cape Clonard, Korea). Six males and five 

 females. Cat. No. 332987, U.S.N.M. 



Station 4858 (near Cape Clonard, Korea). One female. Cat. No. 

 332988, U.S.N.M. 



Station 4868 (off Yon-hai, Korea). One female. Cat. No. 332989, 

 U.S.N.M. 



Station 5804 (off Kinka-san). One male and fem.ale. Cat. No. 

 332991, U.S.N.M. 



Consistency soft, somewhat flabby. Skin loose. Dorsal surface 

 sparsely beset with well-marked roundish warts of various sizes, 

 their thickest distribution being above and behind eyes. No cirri 

 above the eyes. Body about as broad as long, widest about the 

 middle or a little posterior to it; belly nearly flat, sometimes forming 

 a faint longitudinal groove in the middle; periphery bordered with a 

 distinct horizontal ridge all around. Mantle opening narrow, extend- 

 ing a little less than half around the body. 



Head large, only a little narrower than the body, more distinctly 

 marked off anteriorly than posteriorly, with somevrhat prominent 

 eyes. Umbrella well developed, broadest between ventral arms. 

 Funnel extensively incorporated with head, the freely projecting 

 part being very short. Funnel organ W-shaped, the median A - 

 shaped part far longer than the outer limbs. 



Arms subequal, the formula of length being 1>2>3=4; the 

 longest about four times the body-length. Suckers rather small, 

 sparsely biserial throughout. The largest suckers on each arm. are the 

 ninth to eleventh pair which are opposite the umbrella edge, and 

 frequently show a special enlargement on the first and second arms. 

 Right third arm hectocotylized, decidedly shorter than the left third. 

 FuU-form.ed terminal organ about one- thirteenth the entire length 

 of the arm ; its copulatorj^ groove well-defined and marked by numer- 

 ous transverse streaks. The suckers on this arm number 49-52 pairs. 



Gill composed of 21 or 22 leaflets. Full-formed ovary very large; 

 its eggs also conspicuous, measuring 17 by 7 mm. Vaginae thick, 

 short, terminating far behind the anus. Full-formed penis about 



