426 
J. BRONTE GATENBY. 
Formation of Macro mitosome (“ Nebenkern ” of 
some authors). 
Immediately after the second maturation division and just 
as the nucleus becomes reorganised, the mitochondrial bodies 
show a tendency to form a horn-shaped figure (PI. 25, fig. 35). 
Text-fig. 2. 
1. 2, 3. Supposed method in which spireme is formed from mito- 
chondria. 1. Mitochondrial bodies agglomerated together, the 
running together will begin at X. Y. 2. The mitochondria (X and 
Y) and their neighbours have coalesced to form two loops confluent 
on the other side of the membrane (31.), with other loops likewise 
formed. 3. Spireme nearly formed, the bodies A and B in 2 have 
run together. 0. Outer layer (mitochondrial matter). I. Inner 
vesicle of chromophobe substance represented by cross hatching. 
4. Spermatocyte nest cut across the middle, showing the manner in 
which the flagellate organs (in black) project into the lumen \L.). 
W. Wall of the follicle cells of the cyst. M.D. Mitochondria. 
5. Much enlarged view of an acroblast in longitudinal and in trans- 
verse section. C.P.Z. Chromophile zone. C.H.Z. Chromophobe 
zone. 
