MONOGEAPH OF JAPANESE OPHIUROIDEA. 



815 



than six arm spines, long, flared, longer than the corresponding 

 arm joint. Single tentacle scale to each pore. 



This genus includes Ophioconis cinda Bkock, 1888, 0. permixta 

 Kœhlee, 1905, and 0. cupida Kœhlek, 1905, besides the genotype, 

 0. grandi squama Kœhlee, 1904. 



OpMurodon grandisqumna (Kœhlek). 



OpJiioconis gradisquama : Kœhlee, Exp. Siboga, XLY, Pt. 1, 1904, p. 



11, PI. n, figs. 11 & 12. 



One specimen ; Okinosé, Sagami Sea. 

 Malaysian waters. 



The teeth are very flat, thin, widened, hyaline, but not so 

 sharply serrate as in the three other species of the present genus. 



Fig. 87. Opkmrodon grdndlsquama. a. From above. x20. h. From below, x 12. 



The dorsal and lateral arm plates are concentrically striated. The 

 arm spines are longer than in the three other species, and are 

 much flattened, not uniformly tapered, but retain nearly the same 

 width until very near the end, where they abruptly taper. In the 

 flrst few arm joints, they are more or less spatulate. 



