. Elements of zoölogy. Zoology. 38 STAR-FISHES, SEA-URCHINS, ETC. Class III.—Sea-Urchins (Echinoidcd). General Cha7-acteristics.—The egg-shaped skeleton (Fig. 35) is made up of about six hundred hard, six-sided plates in double rows, containing perhaps 3,720 pores for the emis- sion of the tube-like feet. The star-fish is a sucker, but the Echinus a biter, having five long calcareous teeth that meet at a point, m (Fig. 35), and are renewed as they wear away. They are moved by a complicated system of mus- cles, and held in place by a leathery skin. The body is. Please note that these images are
. Elements of zoölogy. Zoology. 38 STAR-FISHES, SEA-URCHINS, ETC. Class III.—Sea-Urchins (Echinoidcd). General Cha7-acteristics.—The egg-shaped skeleton (Fig. 35) is made up of about six hundred hard, six-sided plates in double rows, containing perhaps 3,720 pores for the emis- sion of the tube-like feet. The star-fish is a sucker, but the Echinus a biter, having five long calcareous teeth that meet at a point, m (Fig. 35), and are renewed as they wear away. They are moved by a complicated system of mus- cles, and held in place by a leathery skin. The body is. 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 Holder, Charles Frederick, 1851-1915; Holder, Joseph Bassett, 1824-1888, joint author. New York : D. Appleton and company
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1884
