MoNOGRAPH OF JAPANESE OPHIUROIDEA. 307 



Eastern Sea ; 301 fathoms (Clark), 



OpMotrocUiis lotigispinus Clap.k. 



OpUotrochm lonrjisplnm : Cr.APJv, Bull. U.S. Nat. Mus., LXXV, 1911, 

 p. 94, fig. 33. 



Sagami Sea ; 918 fathoms (Clark). 



Ophiernus adspersus LY.AfAN. 



Ophlernus adspersus : Ly.aüan, Bull. Mus. Comp. Zool., X, 1883, p. 

 236, PI. Ill, figs. 19-21; Kœhlee, Anu. Sei. Nat. Zool., Sér. 8, IV, 1896, 

 p. 316 ; Kœhler, Ecli. Indian Mus., Deep-sea Opli., 1899, p. 32 ; Clark, 

 Bull. U. S. Nat. Mus., LXXV, 1911, p. 96, fig. 34. 



Ophkrnus annedem : Lütken & Moktensen, Mem. Mus. Comp. Zool., 

 XXIII, 1899, p. 107, PI. V, figs. 4-6. 



Eastern Sea ; 440 fathoms (Clark). Colnett Strait ; 1,008 

 fathoms (Clark). Off Hiuga ; 578 fathoms (Clark). Off Kii ; 

 244-290 fathoms (Clark). 



West Indies. Eastern Atlantic. Eastern and western Pacific. 

 Indian Ocean. 



Family 3. Ophiodermatidae Ljuxgman, 1867. 



Disk closely covered with fine grannies, and sometimes with 

 scattered spines. Oral angles, sometimes also the oral shields, 

 covered with granules. Numerous close-set oral papilla?, of wliich 

 the outermost is pointed inwards and projects above the next 

 papilla, which is the largest. Dental papilla) absent. Peristomial 

 plates triple. Oral frames without well developed lateral wings. 

 Ptadial shield and genital plate of the same side of a radius arti- 

 culating with each other by means of two condyles and one pit. 



