ANATOMICAL NOTES ON THE ' COMET ' OF LINGKIA MULTIFORA, LAMARCK. 75 



YII. It may be coDsidered from its frequency as an ordinary mode of re- 

 production, but it does not probably serve any purpose in the fertiliza- 

 tion of generative cells. 

 VIII. Finally, it is highly probable that the mouth is formed secondarily, 

 but not directly from the wound itself. 



I with to close the present article with my thanks to Prof. Dr. Mitsu- 

 kuri for valuable advices and aid. 



(1) Martens, E. von, Ueber das AViedererzeugungsvermogen bei Seesterne. 

 (I regret that I know this article only by a brief account given by 

 Dr. Hamann in Zool. Jahresbericht fiir 1884). 



(2) Sarasin, Paul and Fritz, Knospenbildung bei Linchta multifont, 

 Lamarck. Erg. Natarwiss. Forsch. auf Ceylon l.Bd. 1887-88.) 



(3) Haeckel, H., Die Kometenform der Seesterne und der Generations- 

 wechsel der Echinodermen. Zeit. fiir wiss. Zool. 30. Bd. (Supple- 

 ment), 1878. 



(4) Teuscher, E., Beitrtige zur Anatomic der Echinodermen. III. As- 

 teridae. Jena. Zeit. fiir Naturwiss, 10. Bd. 



(5) Brooks, AV. K., Handbook of Invertebrate Zoology. Boston, 1882. 



(6) Ludwig, H., Beitriige zur Anatomic der<.Asteriden. Zeit. fiir wiss. 

 Zool. 30. Bd. 1878. 



(7) Simroth, H., Anatomic und Schizogonie der Opliiactis inrens Sars. 

 Zeit. fiir wiss. Zool. 27-28. Bd. 



(some others in the foot-notes.) 



Explanation of Plate XI. 



Fig. 1. a — Oral view of a ' comet.' b — Aboral view of the disc of the 

 same. P — One of the prnnitive madreporic plate. 



Fig. 2. Oral view of an adult. At B an arm is naturally cut off from its 

 base, and at A another arm has a constriction. 



Fig. 3. a — Aboral view of a ' comet', b — Oral view of the disc of the same. 



Fig. 4. Vertical view of the interior soft organs of the ' comet' represented 

 in Fig. 3. 



