parthenogenetic strains of P. surinamensis 
1964] 
Roth — Reproduction in Cockroaches 
207 
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For the rod experiments, oocytes were 0.78 mm. or less until the f>8th day (maximum gestation period) 
and later in the bisexual strain. For the parthenogenetic strain, oocytes were 0.85 mm. or less until 60 
days; this was the maximum size of the oocytes at parturition. 
Data for the bead experiments are taken from females used in fig. 5. 
