1962] 
Roth and Stay — Cockroaches 
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Fig. 13A-B. Pycnoscelus surinamensis (parthenogenetic strain) . A. Ovaries 
(0) undeveloped as the result of the presence of a wax “ootheca” in the 
uterus (u). The ootheca was removed on the thirteenth day of pregnancy, 
and replaced with wax. The female was dissected 37 days later. B. Oocytes 
which developed in a female that had a wax “ootheca” in its uterus for 37 
days. The ootheca was removed 13 days after ovulation and replaced by 
wax. Twenty-four days later the nerve cord was severed and the female was 
dissected 13 days later. 
Fig. 13C. Leucophaca maderae. Dissection of a female that mated after her 
nerve cord had been transected. The spermatophore (s) was inserted by the 
male into the body cavity near the right ovary (arrow). 
