278 



ART. 2. — H. MATSÜMOTO : 



918 fathoms (Claek). YensM Sea; 943 fathoms (Claek). Off 

 Kii ; 649 fathoms (Claek). Off Hinga ; 720 fathoms (Claek). 

 Cosmopohtan. 



Ophiura lyaiicisqua^ina, sp. nov. 



One specimen ; off Misaki, Sagami Sea. 



Diameter of disk 5.5 mm. Length of arms 20 mm. Width 

 of arms at base 1 mm. 



Disk pentagonal, with nearly straight interbrachial borders, 

 very flat, thin, covered with numerous coarse, irregular, imbricated 

 scales. The central plate is indistinguishable, but the radiais are 

 distinct, and somewhat larger than the other scales. A large, 



squarish plate is present in each 

 interradius, just touching the 

 disk margin. Radial shields irre- 

 gularly triangular, with acute 

 inner and much rounded outer 

 angles, a little longer than one- 

 third the disk radius, somewhat 

 longer than wide, not in contact 

 with each other. Arm combs 

 very small, with fine, short, 

 blunt, flat, close- set comb papillae, 

 of which about seven are 

 visible from above. Interbrachial 

 ventral surfaces covered also, 

 with coarse, irregular, imbri- 

 cated scales. Genital slits long, 

 with fine, short, blunt, close-set genital papillœ on the abradial 

 border. 



Fig. 76. Opldura paucisquama. x 10. «. 

 From above. 7;. From below, c. Side view 

 of three arm joints near disk. 



