MOXOGEAPH OF JAPANESE OPHIUEOIDEA. 191 



from it ill the coarser and more distinct disk scales, in the much 

 larger radial shields, in the wider ventral arm plates and in the 

 middle arm spines b^niig the shortest and distinctly compressed at 

 the base. 



The specimens from Mera-out-Oisegaké have stouter arms 

 than those fi'om Sengendzuka-Aoyamadashi and from off Oshima. 

 This difference may probably be due to bathymetrical factor. I 

 regard the specimens from Mera-out-Oisegaké as the typo of the 

 present species. 



Aiiipfiipholis pugetmia (Lyman). 



Ampidura pmjetana : Lyman, Proc. Boston See. Nat. Hist., YII, 1860, 

 p. 193^^; Lyman, 111. Cat. Mus. Comp. Zool., I, 1865, p. 125; Lyman, Eep. 

 Clialleuger, V, 1882, p. 145; Kœhler, Bull. Sei. Fr. Belg., XLI, 1907, 

 p. 305. 



AmpMpholis pngetana : Vereill, Trans. Conn. Acad., X, 1899, y>. 312 ; 

 McClendon, Univ. California Publ. Zool., VI, 1909, p. 43, PI. II, figs. 12 

 «t 13 ; Claek, Bull. Ü. 8. Nat. Mus., LXXV, 1911, p. 166, figs. 73. 



One specimen (belonging to Mr. E. Saitô, Imperial Museum at 

 Uyeno, Tokyo); Aomori Bay. Four specimens (belonging to Mr. 

 Sasaki, Coll. Agricult., Sapporo); Oshoro, near Otarunai, Hokkaido. 

 One specimen (belonging to Mr. H. Asano, Imperial Bureau of 

 Fishery); off Kitami ; 60 fathoms. 



Pnget Sound. California. Washington. Alaska. 



The largest one of these specimens measures 4 mm. across 

 the disk and 28 mm. in the arm length. In the larger specimens, 

 the disk scales are very fine and exceedingly numerous, and the 

 primary plates are indistinguishable ; while in the smaller speci- 



1) This paper wn« not seen by me. 



