PARASITES OF SIMULIUM LARVAE 61 
c. Genus Myxocystis. (Mrazek ’97). Spores arise through en- 
dogenous budding within the protoplasm of the vegetative stage 
whose ectoplasm consists of motionless cilia. 
Family 3: Glugeidae. The vegetative stage is multinuclear 
and motionless, remaining undivided and encysted. Sporonts 
arise in it by endogenous budding. 
1 PLANONT 
\ 
LS a MERON TS \ 
LOPES QD 7 \ 
Bn SPORES. g\ oN SEVIS \ 
ee tt LNs 4 SPORONTS \ 
/ / mex SPORES | 4; 4nSPOROBLA sis 1 MULTICELLUUR\ 
/ tbr SPORES MERONT 
mv SPORONTS | | 
nxn SPORES eZ 1 MULTINUCLERR 
82 SPUROBLASTS MERONT 
nn SPORONTS, 
\ 
2 SFOROVTS 
72 SPORONTS 
ibm SPOROBLASS —_ » SPORONTS 
axrSUROALATS 
va 
Text fig. 2. Diagram showing life cycles of Microsporidian genera 
a. Genus Glugea (Thélohan ’91). The number of spores 
formed from a sporont is variable. 
b. Genus Dubosequia. (Pérez ’08). The number of spores 
formed from a sporont is sixteen. 
For the sake of making clear the life-histories of these various 
genera of Microsporidia as conceived by Stempell I have con- 
structed the accompanying diagram (fig. 2). 
