178 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.57. 



around the periphery. Mantle opening narrow, extending less than 

 half around the body. 



Head slightly narrower than body, weakly constricted behind. 

 Umbrella well developed and continued along the ventral side of the 

 arms to the extremity as a broad contractile web. Funnel rather 

 short. Funnel organ, W-shaped, the middle A -shaped part a little 

 longer than the outer limbs. 



Arms subequal; lateral pairs slightly longer than the others and 

 about thrice as long as the body. Suckers small, relatively uniform, 

 distinctly biserial but the first three are in a zigzag row. 



Branchial leaflets 21 or 22 in each gill. Vaginae only slightly 

 crooked; its freely projecting part only 1 mm. long, decidedly shorter 

 than the renal papillae, and distant from the anus by the length of 

 the giU. 



Measurements of type: total length 85 mm.; ventral length of 

 mantle 18 mm.; longest arm 55 mm.; longest radius of umbrella 18 

 mm.; diameter of largest sucker 1.8 mm. 



Typc-local'dy . — Off Fukuyama, Tsugaru Strait. 



Type.— Cat. No. 332968, U.S.N.M. 



18. POLYPUS LONGISPADICEUS Sasaki. 



Poh/pus longispadiceus Sasaki, Annot. Zool. Japon., vol. 9, 1917, p. 366. 



Station 4867 (near Cape Clonard, Korea). One mature male. Cat, 

 No. 332984, U.S.N.M. 



Station 4957 (Hyuga-nada) . One mature male. Cat. No. 332985, 

 U.S.N.M. 



These specimens are referred with great doubt to the present species. 

 In the specimen from the station 4867 the body has a distinct peri- 

 pheral keel which is not found in the original specimens. The 

 suckers are not relatively uniform but unequal, those near the um- 

 brella margin being markedly enlarged on the first and second arms. 

 In Needham's sac were found 48 spermatophores which are 89 mm. 

 long and 1.2 mm. thick at the aboral end and 0.3 mm. thick at tiie 

 oral, the s})erm cord coiling about 150 turns. The principal meas- 

 urements of the specimen are as follows: eye to posterior end of body 

 50 mm.; ventral length of mantle 42 mm.; breadth of either body or 

 head 47 mm.; length of right first arm 185 mm.; of right second arm 

 181 mm.; of right third and fourth arm 178 mm.; length of hecto- 

 cotylus 18 mm.; diameter of largest sucker on first arm 12 mm.; on 

 second arm 11.5 mm.; on third arm 8 mm.; on fourth arm 6.5 mm. 



In the specimen from the station 4957, the hectocotylized arm is 

 a little shorter than the correspondmg arm of the opposite side. The 

 umbrella is broadest between the dorsal arms. The penis is 35 mm. 

 long, but bent almost into the shape of a Z, and expanded near the 

 middle. The spermatophoric gland coils and is folded in a manner 

 different from that of the original specimens. Principal measure- 



