. The shell book . CLAMS, USEFUL AND BEAUTIFUL 1 An experienced clam digger wielding the rake. 3 Camp Venus Clam, Circe castrensis, showing variations. 2 Mud dug away to show hard-shell clams in place. Note 4 Forking Venus Clam, Circf diiaricata. tube where Ihe siphon is thrust up to the surface. 5 Elegant Venus Clam, Dione Veneris. 6 Frilled Venus Clam, Chione 1 Tapes literals. 2 Dostnia discus. CLAMS AND COCKLES Tivclacrassatdloides (much reduced). 5 Cyrena Curalinmsis. Tapes staminea. sulctitnm. 7 Cardivni quadngenenum. 8 Isocardid cor. The Surf Clams. Hen Clams narrower anterior e
. The shell book . CLAMS, USEFUL AND BEAUTIFUL 1 An experienced clam digger wielding the rake. 3 Camp Venus Clam, Circe castrensis, showing variations. 2 Mud dug away to show hard-shell clams in place. Note 4 Forking Venus Clam, Circf diiaricata. tube where Ihe siphon is thrust up to the surface. 5 Elegant Venus Clam, Dione Veneris. 6 Frilled Venus Clam, Chione 1 Tapes literals. 2 Dostnia discus. CLAMS AND COCKLES Tivclacrassatdloides (much reduced). 5 Cyrena Curalinmsis. Tapes staminea. sulctitnm. 7 Cardivni quadngenenum. 8 Isocardid cor. The Surf Clams. Hen Clams narrower anterior end and shallower pallial sinus, this might bemistaken for the preceding species. Length, 6 inches. THE OTTER SHELLSGenus LUTRARIA, Lam. Shell oblong, gaping at both ends; cartilage plate prominent,triangular, with one or two small teeth anterior to it; pallial sinusdeep, to accommodate the long, united, leathery coated closed e cept at opening for the protrusion of the strongfoot; gills taper to mouth. Thirty-three species, living in sandymud of quiet bays and in estuaries of rivers, burrowing verticallylike Mya. The Oblong Otter Shell (L. dblonga, Gmel) has the out-line of a Hollanders wooden shoe, the beak at the ankle, thebroad posterior end for the toe. Out of this the great siphon pro-trudes upward to clear water, while the foot ranges fifteen
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Keywords: ., bookcentury1900, bookdecade1900, bookidshellbook00r, bookyear1908
