i6o 



DR. RVAJI IKEDA. 



Also in other respects, the two species differ widely from each other. 

 C . carnea may be said to resemble more closely the next species. 



4) . Corymorpha pendula Agassi/, is distinguished from the 

 present species by its bright color, by the gonosomes numbering about 

 30, and by the more frequently anastomosing longitudinal canals of 

 hydrocaulus. 



5) . Corymorpha palma Torrey exhibits several noticeable 

 peculiarities which are not found in the present species ; for instance, 

 the nearly colorless hydrosome, proximal tentacles numbering less 

 than 30, the medusa devoid of any tentacle and having a manubrium of 

 considerable length (at least twice as long as the height of umbrella), etc. 



6) . Corymorpha. appelocfi Bonnevie" is a remarkable form with 

 rudimentary tentacles 



Budding in Corymorpha tomoensisP 



While Mr. Arii was examining some preserved specimens of C. 

 tomoensis he discovered among the tangled mass of the filaments 

 of basal bulb a very small individual (fig. 5), which in a degree 

 resembled the adult Corymorpha. Later careful search has led to the 

 discovery of some thirty small individuals in various stages of develop- 

 ment. Fig. 5 represents the youngest stage with four distal and seven 

 proximal tentacles; fig. 6 a much more advanced stages provided with 

 ten distal and seventeen proximal tentacles. 



Whether or not these young animals were really those budded 

 off from the adult Corymorpha. was a question of high interest to me. 

 In vain have I tried to get information on the subject from the literature. 

 Dr. Torrey of the California University has kindly informed me that 

 he also had often observed similar small animals attached to the 

 filaments of adults, but was inclined to believe that they were always 



1) . Bonnevie, Kr., — Hydroiden (Meeresfauna von Bergen, 1901); in Zool. Ccntralbl., 

 Jahrg. 8, 1901, pp. 464-465. 



2) . The fuller account of the budding will be published later. 



