MONOGEAPH OF JAPANESE OPHIUROIDEA. 



349 



One specimen ; Enoshima. Numerous specimens ; Misaki. 



Indo-Pacific. Misaki may be the northern hmit of this 

 species. 



My specimens have the disk spines not so profusely developed 

 as in the East Indian type, but fevv^, short and inconspicuous ; so 

 that they are rather liable to be mistaken for an Ophiocoma. 

 The colour is yellowish white in alcohol, but very dark red in life. 



Ophiomastix liltkeni Pfeffer. 



Ojoh'omastix 

 liltkeni : Pfeffer, 

 Abb. Senckenberg. 

 Naturf. Gesell., 

 1900, XXV, p. 83. 



Four speci- 

 mens ; Okinawa. 



Philippines 

 (Pfeffer). 



The largest 

 one of my speci- 

 mens is 22 mm. 

 in diameter, 250 

 mm. in the 

 arm length, and 

 4 mm. in the 

 arm width at 

 the base. These 

 specimens agree 

 exactly with 

 Pfeffee's des- 



Fig. 98. Ophiomastix lütkeni. x3. a. From above, b. From below, 

 c. Side view of three arm joints near disk. 



