Plate 5 



Figure 1. Q uinq ueloculina crassa d'Orbigny, var. subcuneata Cushman. X 60. 

 Porto Rico, a, b, opposite sides; c, apertural view. 



2. Quinqueloculirm poeyana d'Orbign\-. X 90. Tortugas. a, b, oppo- 



site sides; c, apertural view. 



3. Quinq ueloculina sub poeyana Cushman. X 80. Tortugas. a, 6, oppo- 



site sides; c, apertural view. 



4. Quinqueloculinadisparilis d'Orbigny. X 80. Off Plymouth, England. 



a, b, opposite sides; c, apertural view. 

 5-7. Quinqueloculina bicornis (Walker and Jacob). After Williamson. 



o, b, opposite sides; c, apertural view. Figs. 6, 7, Earlj^ stages. 

 106 



