Encystment of AXolosoma. 13 
have been described by d’Udekem *, Maggi t, and, later, by 
Stole f: Stole’s paper is fuller; there is no statement in 
d’Udekem’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 Magei saw sexually mature individuals (see fig. 9, tav. 1. 
ot his memoir). 
Fig. 1.—olosoma within the cyst. 
Fig. 2.—The worm making its way out of the ruptured cyst. 
In spite of the absence of any trace of genital organs in the 
Atolosoma the water contained numerous peculiar bodies 
(woodeut, 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 génitaux des Aolosoma et des Chetogaster,” 
Bull. Acad. Roy. Belg. t. xii. (2° sér.) p. 469. 
+ ‘Intorno al genere Aolosoma,” Mem. Soc. Ital. Sci. Nat. vol. i. 
e 
¢ “O pohlaynick organech rodu olosoma a jejich pomeru ku orga- 
num exkrecnim,” SB, Bohm. Ges, 1889, p. 183. 
