. The shell book . THORNY OYSTERS AND OTHERS 1 Royal Thorny Oyster, Spondyhts regius. 3 Hanicardium sp, 5 Xirobar Thorny Oyster, Sfxmdylus Nicobaricus. 2 Twisted Ark Shell, /Irco lortuosa. 4 Im]«;rbl Thorny Oyster, Spondylus imperialis. The Thorny Oysters The Thorny-oyster Foot Shell (P. Spondyloideum, Gmel.)has an outline somewhat suggesting the human foot. The animalbetween these flat valves must be very thin. It was first de-scribed as an oyster, and it long enjoyed a reputation for is found most abundantly in the Red Sea where it is partiallyburied in coral reefs. Colour, brownis
. The shell book . THORNY OYSTERS AND OTHERS 1 Royal Thorny Oyster, Spondyhts regius. 3 Hanicardium sp, 5 Xirobar Thorny Oyster, Sfxmdylus Nicobaricus. 2 Twisted Ark Shell, /Irco lortuosa. 4 Im]«;rbl Thorny Oyster, Spondylus imperialis. The Thorny Oysters The Thorny-oyster Foot Shell (P. Spondyloideum, Gmel.)has an outline somewhat suggesting the human foot. The animalbetween these flat valves must be very thin. It was first de-scribed as an oyster, and it long enjoyed a reputation for is found most abundantly in the Red Sea where it is partiallyburied in coral reefs. Colour, brownish red in indistinct con-centric bands on a paler ground. Length, 3 inches. 407 CHAPTER XXXI: THE FILE SHELLS FAMILY LIMID^Genus LIMA, Brug. SHELL obliquely oval, eared, white, gaping at the sides;hinge toothless, with triangular ligament pit; umbones wellapart; surface sculptured with radiating ridges bearing numerousimbricated, spiny points ; mantle inflated, bag-like, open, fringedat border, set with eyes; foot
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Keywords: ., bookcentury1900, bookdecade1900, bookidshellbook00r, bookyear1908
