Enci/stinent of ili^olosoma. 



13 



have been described by d'Udckcni *, Maggi t, and, later, by 



Stole |. Stoic's paper is fuller ; there is no statement in 

 d'Udekcni's paper of the time of year at which sexual propa- 

 gation takes place. Maggi speaks of autumn without parti- 

 cularizing the exact month. It is quite evident, however, 

 that jMaggi saw sexually mature individuals (see fig. 9, tav. ii. 

 of his memoir). 



Fig. 2. 



Fig. 1. — ^olosoma %Yithiu the cyst. 

 Fig. 2. — The worm making its way 



way out of the ruptured cyst. 



In spite of the absence of any trace of genital organs in the 

 jSflolosoma the water contained numerous peculiar bodies 

 (woodcut, fig. 1) which I believed at first to be developing 

 embryos ; I may, indeed, very possibly be mistaken in 

 believing as I do now that they are not developing embryos. 



* " Notice sur les organes g^nitaux des ^olosoma et des Chatogaster,^^ 

 Bull. Acad. Roy. Belg. t. xii. (2-^ s^r.) p. 469. 



t *'Intoruo al genere yEolosonia,''' Mem. Soc. Ital. Sci. Nat. vol. i. 



I " pohlavnick orgauech rodii j^olosoma a jejich pomeru ku orga- 



num exkrecnim," SB. Bohm. Ges. 1889, p. 18."], 



