1912.] NATURAL SCIENCES OF PHILADELPHIA. 391 



Polypus hongkongensis (Hoylo, 1S85). 



? Octopus punctatus Gabb, 1862, p. 170 (not of Blainvillc, 1826). 



Octopus hongkongensis Hoyle, 1885a, p. 224. 



Octopus hongkongensis Hoyle, 1885c, p. 99. 



Octopus punctatus Hoyle, 1886, pp. 11, 100, etc., pi. 5. 



Octopus punctatus Ortmann, 1888, p. 662. 



Octopus punctatus Joubin, 1897, p. 110, pi. 9. 



Octopus punctatus Joubin, 1897a, p. 98. 



Polypus punctatus Wiilker, 1910, p. 7. 



Wiilker cites the enormous elongate hectocotylus (^ or more the 

 length of the arm) and the very long arms (7 times the ventral 

 mantle length) as perhaps the most conspicuous features which may 

 be depended upon to distinguish this very distinct species. I am 

 not at all convinced that the Eastern Asiatic species is really iden- 

 tical with the 0. punctatus Gabb of California, although without 

 doubt they are very closely related. 



Distribution. 345 fathoms, off Ino Sima Island (type locality, 

 Hoyle); Aburatsubo, Sagami (Wiilker). Hong Kong, China 

 (Hoyle); Kamtschatka (Joubin). 

 Polypus dofleini walker, 19 10. 



Polypus dofleini Wiilker, 1910, p. 7, pi. 2, figs. 1, 2; pi. 3, fig. 10. 



A species of the hongkongensis group distinguished by its rela- 

 tively moderate arms (4 times the ventral mantle length) and decid- 

 edly smaller hectocotylus (one-sixteenth as long as the arm). 



Distribution. Todohokke, Oshima (type locality, Wiilker). 



PolypUS sp. Young. 



Catalogue No. 2,012, Stanford University Invertebrate Series, 

 contains four small & Polypi taken by Snyder and Sindo at Tane- 

 gashima Island, Japan [S. S. B. No. 344]. These agree briefly in the 

 following characters, but I am unable to refer them with certainty 

 to any of the described species: 



Body plump, firm, rounded; head short and broad. Dorsal 

 surface finely and quite evenly granulose with numerous minute, 

 acute, pointed papillae; one or two larger ones over each eye; smooth 

 below. 



Arms moderate, subequal, evenly tapering, about three times as 

 long as the head and body, their order 3 = 2, 4, 1. Suckers large, 

 crowded; one or two of those just inside the web margin on the 

 lateral arms a little larger than the rest, but not abruptly or con- 

 spicuously so. Hectocotylized arm scarcely at all shorter than its 

 mate of the opposite side; the terminal organ very small, smooth, 

 elongate, spoon-shaped. Umbrella short, about equally developed 

 all around. 



