. 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 1800. Blake (Ship); Marine animals -- Atlantic Ocean; Marine sediments; Ocean. Fig. 296. — Siliquaria modesta. V^- Fig. 297. — Vermetus erectus. h^. one of the irregular gasteropods, with a slit like a Pleurotoma- ria, so frail as almost to perish with a touch, lives in the soft mud of the abysses, while the stouter Vermetus erectus (Fig. 297) finds a foot
. 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 1800. Blake (Ship); Marine animals -- Atlantic Ocean; Marine sediments; Ocean. Fig. 296. — Siliquaria modesta. V^- Fig. 297. — Vermetus erectus. h^. one of the irregular gasteropods, with a slit like a Pleurotoma- ria, so frail as almost to perish with a touch, lives in the soft mud of the abysses, while the stouter Vermetus erectus (Fig. 297) finds a foothold on dead corals and shells. The species of this genus are comparatively shallow-water animals. The majority of the bivalves are characterized by great deli- cacy of shell and sculpture. In the deep-water representatives of the family of scallops, the constituent prisms are often large enough to be seen with the naked eye, and the shell is strength- ened within by slight riblets radiating from the hinge. Pecten. 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 Houghton, Mifflin
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectocean, bookyear1888
