u 



ART. 2. — H. MATSUMOTO 



of these considerations, I am convinced that, the identification and 

 naming of Aster oschema merely on the ground of the oral papillae, 

 widened or not widened arm bases, degree of granulation, arm 

 length, &c., without reference to the size of the specimens, would 

 inevitably lead to a great confusion. Thus, I am obliged to 

 transfer several species set up by eminent authors to the list of 

 synonyms. 



Asteroschcnia tiibiferutu MatsUxMoto. 



Asteroschema tuhifermn : Matsumoto, Proc. Acad. Nat. Sei. Philadelpliia, 

 1915, p. 52. 



Two specimens ; Okino-sé, Sagami Sea. One specimen ; off 

 Misaki, Sagami Sea. 



Diameter of disk 16 mm. Length of arras 230 mm. Width 



of arms at base 4.5 mm. 



Disk rather arched, a 

 little higher than the arms, 

 closely covei'cd with very 

 fine smooth granules. 

 Radial ribs long and nar- 

 row, narrower within, 

 nearly reaching the centre. 

 The disk granules are 

 finer and rather well 

 spaced towards the centre, 

 but coarser and very close- 

 set on the radial ribs. 

 Interbrachial ventral sur- 

 faces rather vertical, form- 



Kig. lO. Asteroschema iuhiferum. x4. a. From above. 

 &. From below. 



ing a notch, in which lie 



