1911] BROW N—LACHNEA SCUTELLATA 289 
with a centrosome which makes its appearance on the nuclear 
membrane, and some of them connect the centrosome with the 
chromosomes (fig. 35). No signs of this centrosome have been 
visible up to this time, and as there is nothing to indicate that it 
persists through the resting stages, it is probable that it is formed 
de novo at each division. In this respect it resembles the centrosphere- 
like bodies in Polysiphonia violacea (YAMANOUCHI 39), the centro- 
spheres in. Corallina (Davis 11), and the kinoplasmic caps 
Oe 
Fics. 35~41.—Fig. 35, fibers attached to centrosome; fig. 36, nucleus showing 
extra body which appears much like a chromosome; fig. 37, late prophase of first 
division in ascus; fig. 38, metaphase of first division; fig. 39, early anaphase of first 
division; fig: 40, late anaphase, showing division of daughter chromosomes; fig. 41 
telophase of first division; all X 2800. 
in Griffithsia bornetiana (Lewis 25). Deeply staining granules 
are frequently present in the cytoplasm of Lachnea. These are 
Particularly abundant around the nucleus at this division. The 
nuclear membrane does not have an even appearance, but is irregu- 
larly thick, and often the granules just described are in contact 
with it. Owing to these facts it has not been possible to trace the 
origin of the centrosome. The centrosome here, as in the divisions 
Previously described, is not a spherical body, but a flattened struc- 
ture composed of a number of granules. 
