EKXPLANATION OF THE ILLUSTRATION 
Se_aGIneLLa AmesiaANaA Darrah. Photograph of a ni- 
trocellulose peel of the strobilus showing the ar- 
rangements of the megaspores and the megaspor- 
angia. The numerous spores exhibit various struc- 
tures: the reticulated spore wall, the tetrad-scar, 
the equatorial Hange, and a few spores filled with 
gametophytic tissue. Eight times natural size. Prep- 
aration number 8. The type specimen is number 
30645 Paleobotanical Collection of the Botanical 
Museum. 
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