File:EB1911 Foraminifera - Imperforata.jpg

English: Foraminifera - Imperforata. Legend: 1, Spiroloculina planulata, Lamarck, showing five “coils”; porcellanous. 2, Young ditto, with shell dissolved and protoplasm stained so as to show the seven nuclei n. 3, Spirolina (Peneroplis); a sculptured imperfectly coiled shell; porcellanous. 4, Vertebralina, a simple shell consisting of chambers succeeding one another in a straight line; porcellanous. 5, 6, Thurammina papillata, Brady, a sandy form. 5 is broken open so as to show an inner chamber; recent. × 25. 7, Haplophragmium canariensis, a sandy form; recent. 8, Nucleated reproductive bodies (bud-spores) of Haliphysema. 9, Squamulina laevis, M. Schultze; × 40; a simple porcellanous Miliolide. 10, Protoplasmic core removed after treatment with weak chromic acid from the shell of Haliphysema tumanovitzii, Bow. n, Vesicular nuclei, stained with haematoxylin. (After Lankester.) 11, Haliphysema tumanovitzii; × 25 diam.; living specimen, showing the wine-glass-shaped shell built up of sand-grains and sponge-spicules, and the abundant protoplasm p, issuing from the mouth of the shell and spreading partly over its projecting constituents. 12, Shell of Astrorhiza limicola, Sand.; × 32; showing the branching of the test on some of the rays usually broken away in preserved specimens (original). 13, Section of the shell of Marsipella, showing thick walls built of sand-grains.