Smithsonian miscellaneous collections . ide view of hypotype ( No. P2115), from station 18,showing rounded outline and 4 pairs of chambers, half of which reachthe umbilicus on each side, and showing the tooth which extends up-ward into the elongate aperture, ib. Edge view, showing broadlyrounded periphery. X 150. Fig. 2. CassiduUna norcrossi Cushman 120 2a, Side view of hypotype ( No. P2142), from station 27,showing chambers extending almost equally onto each side, and straightlimbate sutures. 2b, Edge view, showing elongate aperture, parallelingthe periphery. X iSo. 142 SMITHS
Smithsonian miscellaneous collections . ide view of hypotype ( No. P2115), from station 18,showing rounded outline and 4 pairs of chambers, half of which reachthe umbilicus on each side, and showing the tooth which extends up-ward into the elongate aperture, ib. Edge view, showing broadlyrounded periphery. X 150. Fig. 2. CassiduUna norcrossi Cushman 120 2a, Side view of hypotype ( No. P2142), from station 27,showing chambers extending almost equally onto each side, and straightlimbate sutures. 2b, Edge view, showing elongate aperture, parallelingthe periphery. X iSo. 142 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 121 Page Figs. 3, 4. Cassidulina teretis Tappan 121 3, Side view of hypotype ( No. P2io7a), from station 18,showing slightly evolute coiling, umbonal boss, and peripheral ,b, Side views of hypotype ( No. P2io7b), from station , Edge view, showing subacute periphery, and narrow, crescentic aper-ture. X 72- PLATES SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 121. NO. 7. PL. 1. RHIZAMMINIDAE, SACCAM MINIDAE, HYPERAM M INIDAE, REOPHACIDAE (SEE EXPLANATION OF PLATES AT END OF TEXT.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 121. NO. 7. PL. 2
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Keywords: ., bookauthorsm, bookcentury1800, bookdecade1860, booksubjectscience
