160 AßT. 2. — H. MATSUMOTO : 



hh — Arm spines long, slender, conical, ratlier pointed ; radial shields 



mostly or entirely naked var. japonica. 



aa — Supplementary dorsal arm jplf^'tes occurring only along the outer 

 border of the primary ones ; oral papiUse long and slender .... 

 hracliyactis. 



OphiopJiolis mirabilis (Duncan). 



Ophioleiyis mirabilis : Duncan, Jouru. Linn. 8oc. London, XIV, 1879, 

 p. 460, PI. IX, fig. 12, PI. X, figs. 13 c^ 14. 



Ophiopholis mirabilis : Lyman, Bull. Mtis. Comp. Zool., YI, 1879, ]). 43 ; 

 Lyman, Rep. Challenger, Y, 1882, p. 115 ; Kœhlee, Res. Camp. Sei. Monaco, 

 XXXIY, 1909, p. 168; Clark, Bull. U.S. Nat. Mus., LXXY, 1911, p. 117, 

 fig. 43. 



Numerous specimens ; o& Misaki. Numerous specimens (be- 

 longing to Mr. B. Saito, Imperial Museum at Uyeno,Tokyo); Aomori 

 Bay. Four specimens ; off Hokkaido, Okhotsk Sea. 



Korea (Duncan). L'^raga Channel ; 58 fathoms (Claek). 

 OffDoumiki Saki ; 01 fathoms (Claek). Off Ando Zaki ; 76-79 

 fathoms (Claek). Off Kinkwasan ; 78 fathoms (Claek). Hakodate 

 Bay; 11.5-22 fathoms (Claek). 



The largest of these specimens is 10 mm. in the disk diameter 

 and 40 mm. in the arm length. Most specimens are brownish 

 gray in alcohol, variegated or spotted on the disk and banded on 

 the arms with dark gray, and often patched on the disk with 

 white. Some other specimens are yellowish brown, variegated and 

 Imnded with dark brown, while still others are light brown, not 

 variegated or banded. One specimen is entirely white. Tlie 

 relative size of the dorsal arm plates and the two large supple- 

 mentary plates is also variable, ranging from 2:1 to 1:1. 



