286 ART. 2. — H. MATSÜMOTO : 



25 ; Kœhlee, Ech. Indian Mus., Deep-sea Oph., 1899, p. 26, PI. II, figs. 

 12 & 13, PI. in, fig. 21 ; Kœhler, Exp. Siboga, XLV, Pt. 1, 1904, p. 65 ; 

 Kœhlek, Mém. Soc. Zool. Fr., XIX, 1906, p. 6; Kœhler, Exp. Sei. 

 Travaüleur et Talisman, VIII, 1907, p. 266. 



Two specimens ; off Ukishima, Uraga Channel ; 300 fathoms. 

 Indo-Pacific. Atlantic. 



Diameter of disk 9 mm. Length of arms 28 mm. Width of 

 arms at base 2 mm. 



Disk pentagonal, rather flat. Dorsal surface covered with 

 about sixty-six stout, somewhat imbricated plates, besides the 

 radial shields ; the central plate, basais, first radiais, second radiais, 



first interradiais and 

 second interradiais being 

 the largest. Central plate 

 pentagonal, with the 

 rounded angles placed 

 interradially. First 



radiais semicircular or 

 diamond- shaped, wider 

 than long, separated 

 from the central plate 

 by the small, oblong 

 infrabasals, and from 

 one another by the 

 diamond -shaped basais. 

 First interradiais longer 

 than wide, much wider 



Fig. 77. Ophiomusmm scalare xlO. n. From above, h. 

 From below, c. Side view of three arm joints near at the OUtcr end than 

 disk. 



at the mner. becon'd 

 interradiais quadrangular, wider than long. Piadial shields large 



