Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 657
peus, which bearsexactly the same relationto Heterostegina, that Or-bitolites does to Orbiculina;in being constructed uponthe cyclical plan from thecommencement, its cham-berlets being arranged inrings around a centralchamber (Plate xvi., fig. 1).This remarkable genus, atpresent only known… … Heterostegina. VITREOUS FORAMINIFERA :—ORBITOIDES. 585 from considerable depths off the coast of Borneo, is the largestof existing Foraminifera; some specimens of its disks in theBritish Museum having a diameter of 2f inches. Notwith-standing the difference of its plan of growth, it so…
Microscopy · Biology
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