JOURNAL OF THE COLLEGE OF SCIENCE, IMPERIAL UNIVERSITY, 

 TOKYO, JAPAN. 



VOL. XXVII., ARTICLE 7. 



On some Muriceid Corals belonging 

 to the Genera FlUgella and Acis. 



By 

 K. Kinoshita, RigahisM. 



With 2 plates. 



The four species of Muriceid corals, which form the subject 

 of this paper, belong to the genera Filigella and Acis. Three 

 of these species seem to be new to science and will be briefly 

 described herein. The specimens studied are preserved in the 

 Alcyonarian collection of the Science College. 



To Prof. Ijima and Dr. Yatsu I offer my best thanks for 

 their kind help in tbe preparation of this paper. 



Filigella Geay. 



Filigella Gray, Ann. Mag. Nat. Hist., (4) 11, 1868, p. 443. 

 Elasma Studer, Arch. Naturgesch., 53, 1, 1887, p. 58. 

 Elasmogorgia Wright à Studer, Challenger Report, 1889, 

 p. LVi and p. 132. 



Filigella rnitsiikurii, n. sp. 



(PI. I., fig. 1 ; PI. II., figs. 7-9). 



This species is represented by thirteen specimens, of which 

 only three are ^^YÏQci. They are all extremely thin, thread- 



