. The shell book . ria-tions, radiating and concentric, which are stronger in the broadinterstices than on the ridges. The white surface has a yellowtinge. Diameter, 3 to 4 inches. Habitat.—Moluccas. Three smaller species occur in the Philippines, all obliquelyelongated, and well ruffled, so that one can know them at a glanceas belonging to the genus. THE BEARS PAW CLAMGenus HIPPOPUS, Lam. Shell massive, equivalve, regular; hinge with two teeth in eachvalve; lunule nearly closed; sculpture of elaborate frilled scaleson its numerous ridges and interstices. Single species. The Spotted Bears Paw
. The shell book . ria-tions, radiating and concentric, which are stronger in the broadinterstices than on the ridges. The white surface has a yellowtinge. Diameter, 3 to 4 inches. Habitat.—Moluccas. Three smaller species occur in the Philippines, all obliquelyelongated, and well ruffled, so that one can know them at a glanceas belonging to the genus. THE BEARS PAW CLAMGenus HIPPOPUS, Lam. Shell massive, equivalve, regular; hinge with two teeth in eachvalve; lunule nearly closed; sculpture of elaborate frilled scaleson its numerous ridges and interstices. Single species. The Spotted Bears Paw Clam (H. maculatus, Lam.) isone of the most elegant and highly prized of bivalve shells. Speci-mens are obtained in great abundance from eastern seas anddistributed all over the world. Yet never a second species, noreven a distinct variety has been found, though the type species hasbeen well known for nearly two centuries. The gracefully curvedridges and intervening sulci are adorned with rows of frond-like 364 f. 1 One valve of the Giant Clam, Tridacna gigas, of Australia 2, 3 Bears Paw Clam, Hippopiu maciilatus.
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Keywords: ., bookcentury1900, bookdecade1900, bookidshellbook00r, bookyear1908
