MONOGRAPH OF JAPANESE OPHIUROIDEA, 



225 



Fig. 61. 02)Jiiot/irix nerekUna. From above, x 5; 



Indo- Pacific. So far as 

 known, Misaki is about 

 the northern hmit of this 

 species. 



This species is one of 

 the most common httoral 

 ophiurans in the vicinity of 

 Misaki. The colour in 

 alcohol is blue, with a 



beautiful network of white streaks on the disk and fine regular 

 annulations on the arms ; the network consists of the white 

 peripheral zones of the disk plates and of the white, more or less 

 meandering lines on the radial shields, and the annulations are 

 due to the presence of a white, transverse streak on each dorsal 

 arm plate. If I remember aright, the specimens were in life 

 shades of vermilion red in colour and perhaps of dark purplish 

 brown. 



Ox^hiothrioc ohtusa Kœhler. 



OpJdothrix ohtusa : Kœhler, Exp. Siboga, XLV, Pt. 2, 1995, p. 98, 

 PL XI, figs. 6-10, PI. XVI, fig. 5. 



One specimen; Okinawa, Riu-kiu. 



Malaysian waters (Kœhler). 



Ox>Mothridc hirsuta Müller & Troschel. 



OpMothrix Mrsuta : Müller & Troschel, 

 Sys. Ast., 1842, p. Ill ; yon Martens, Arch. 

 Naturg., XXXVI, 1870, p. 255; Lyman, Rep. 

 Cliallenger, V, 1882, p. 226; Marktanner- 



Fig. 62. Ophiothrix oMusa. 

 Dorsal view of three arm 

 joints somewhat near disk. 

 x7. 



