On a Collection of Ophiurans from the Vicinity 

 of Kinkwasan, with Description of 

 a New Species. 



By 



H. Matsumoto, Rigakushi, Rigaktihakushi. 



With 2 figures in text. 



Of the ophiuran fauna of the vicinity of Kinkwasan, Rikuzen, 

 Asteronyx loveni Müller & Troschel, Ophiolebes asaphes Clark, 

 Ophiopholis mirabilis (Duncan), O. aculeata var. japonica (Lyman), 

 Ophiothrix marenzelleri KŒHLER (=0. hylodes Clark), Stegophiura 

 sculpta (Duncan), S. sterea (Clark), 5. sladeni (Duncan) {—Ophiura 

 stiphra Clark), Op Mura sarsii LÜTKEN, O. flagellata (Lyman) and 

 OpMonereis eurybracMplax Clark have been recorded by CLARK, 

 and OpMophragmus japonicus MATSUMOTO by me. In July, 191 5, I 

 made some collection in that vicinity on board the " Tôkwamaru " and 

 obtained representatives of the majority of these species besides two 

 additional ones, one of which appears to be new to science. I here 

 propose to make some notes on them. 



I. Asteronyx loveni Müller & Troschel. 



Clark, Mem. Mus. Comp. Zool., XXV, No. 1, 1915, p. 180; 

 MATSUMOTO, Journ. Sci. Coll., Tokyo, XXXVIII, Art. 2, 1917, 

 P- 33- 



Five specimens ; S. E. E. of Kinkwasan ; 104 fathoms. 



2. Astrothrombus Chrysanth^, sp. nov. 

 Two specimens ; S. E. S. of Enoshima, N. from Kinkwasan ; 43 

 fathoms. 



1) This specific name is derived from the name of the type locality, "Kinkwasan," 

 which means " Gold Flower Mountain." 



