. A contribution to American thalassography : Three cruises of the United States Coast and geodetic survey steamer "Blake", in the gulf of Mexico, in the Caribbean sea, and along the Atlantic coast of the United States, from 1877 to 1880. Blake (Steamer); Marine animals -- Atlantic Ocean; Marine sediments. Fig. 493. — Rliabdammina abyssorum. (Brady.) scribed in his first list of animals living in deep water off Norway. This species presents many interesting modifications dependent on external conditions, and its polymorphism seems remarkable ; it is triradiate, quadriradiate, or a _
. A contribution to American thalassography : Three cruises of the United States Coast and geodetic survey steamer "Blake", in the gulf of Mexico, in the Caribbean sea, and along the Atlantic coast of the United States, from 1877 to 1880. Blake (Steamer); Marine animals -- Atlantic Ocean; Marine sediments. Fig. 493. — Rliabdammina abyssorum. (Brady.) scribed in his first list of animals living in deep water off Norway. This species presents many interesting modifications dependent on external conditions, and its polymorphism seems remarkable ; it is triradiate, quadriradiate, or a _ _ straight tube, including all their possible combinations. A small straight form o of the genus, R. linear is (Fig. 494), is also frequent near the 500-fathom line. One of the species of Lituolinse, Reophax scorpiurus, attains a length of 10 mm. It builds its test loosely of siliceous sand Fig-. 494. — Rhabdammina line- aris. -|. (Brady.). Fis-. 405. Fig-. 495 a. Reophax scorpiums. |. (Goes.) and sponge spicules. (Figs. 495, 495 a.} A widely spread form crowded with nipple-shaped protuberances, Thurammina papil-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Agassiz, Alexander, 1835-1910; U. S. Coast and Geodetic Survey. Boston ; New York : Houghton, Mifflin and Co.
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Keywords: ., bookauthoruscoasta, bookcentury1800, bookdecade1880, bookyear1888
