Abstract
The spores germinate on minute setae on the antennae of Blaberus cranlifer Bur-meister and B. giganteus (L.). A flexuous filament terminates the primary axis only in the female; an antheridlum terminates it in the male. In the female, 2 series of perithecia are formed, each perithe-cium arising as a bud from the base of the shield of the preceding per-ithecium. Carpogonial upgrowths develop from 1 of the 1st-tier outer wall cells of the perithecium. Four inner wall cell rows are formed from 3rd-tier outer cells and an extra 4th-tier cell. Frequent abortion of perithecia occurs. Antheridial branches may develop from perithecia aborting late in development.

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