FIG. 9 in Two new species of protocardiine cockles (Mollusca, Bivalvia, Cardiidae) from the tropical Southwest Pacific

FIG. 9. — Shape and sculpture variation in Microcardium trapezoidale n. sp.: A, length 9.2 mm, exterior of left valve, Norfolk Ridge, BATHUS 3, stn CP 833; B, length 16.7 mm, exterior of right valve, Tonga, BORDAU 2, stn CP 1560; C, length 13.2 mm, exterior of right valve, Loyalty Islands, MUSORSTOM 6, stn CP 464; D, paratype, length 13.9 mm, dorsal and posterior views, Loyalty Islands,