Plate 25 



Figures 1 a, b. Planorhulina acervalis H. B. Brady. X 40. Dry Tortugas. 

 a, dorsal view; h, ventral view. 

 2 a-c. Acervulina inhaerens Schultze. X 50. Montego Bay, Jamaica. 

 a, dorsal view; b, ventral view; c, peripheral view. 

 3-9. Rupertia stabilis Wallich. (After H. B. Brady). Figs. 3-6, 

 Earh' stages. Fig. 7, Adult. Fig. 8, Double specimen. 

 Fig. 9, Longitudinal section. 



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