MONOGllAPH OF JAPANESE OPHIUROIDEA. 



133 



Ophiolehes tiiberosa Matsumoto. 



OpMolebes tvberosa : Matsumoto, Proc. Acad. Nat. 8ci. Pliilaclelphia, 

 1915, p. 64. 



Numerous specimens; Okinosé (a submarine bank), Sagami 

 Sea. 



Diameter of disk 10 mm. Length of arms 38 mm. Width 

 of arms at base 1.5 mm. 



Disk five-lobed, with strongly concave interbrachial borders, 

 deeply hollowed at the central region, covered by a thick, cereous 

 skin, wliich contains well spaced, coarse granules or thick, 

 rounded scales of various size ; beset with several short, conical, 





#^Ä^^.? 



Fig. 33. Ophiolehes hiberosa. x 8. a. From above, h. From below, 

 c. Side view of three arm joints nenr disk. 



