PLATE XXVIII. 



Figure 1. Massilina crustn Cushman, n. sp. Side view. X 40. 



2. Massilina ncclnna Cushniau, n. sp. Side view. X 80. 



A. TTilocuHiia oblonga iMimtagn) D'Orhigny. Side view. X SO. 



4. Triloculina (Mo nij a (MontvLi^n) n'Orbigny. Opposite side of another speeimen. X 80. 



5. Bilnculinany).'? Ajiertural view, showing aperture and tooth. X 40. 



6. Bilocidinaap.? Side view of another specimen. X 40. 



122 



