184 GERM-CELI CYCLE IN ANIMALS 
A similar interpretation is given by Haecker for the 
cytoplasmic inclusion (‘‘Spermakern”) found by 
Boveri (1890) in 
Tiara. Similarly 
the “‘Kleinkern” 
which Chun (1891) 
discovered in the 
egg cells of Ste- 
phanophyes su- 
perba, and the 
bodies described 
by Hertwig (1878) 
near the matura- 
tion spindles of 
Mytilus and Sa- 
gitta, resemble 
very closely the 
metanucleolus of 
Avquorea. 
Furthermore, 
the metanucleolus 
is considered by 
Haecker homolo- 
gous to the “ Par- 
bs ” 
Fic. 55.— A-D. Stages in formation of acopulationszelle 
blastula of Aquorea forskalea showing seg- described by Weis- 
regation of metanucleolus. (From Haecker, I hi 
1892.) E. Oécyte of the cat containing mann and Ischi- 
Faas CO Com Kawain the winter 
eggs of certain 
DapuHnip&, and in both cases it is considered prob- 
able that these peculiar bodies are restricted to the 
**Keimbahnzellen” of the embryo. 
