Memoirs of the Museum of Comparative Zoӧlogy, at Harvard College, Cambridge, Mass . Helicit)peCo,Bo5tDii PLATE 137. Plate 137. Clypeaster humilis (Leske). 1. Abactinal view of bare test of specimen from unknown locality. 2. Right-side view of same. Natural size. AlbatrossTacific and Hawaiiai-j Echini, PUTC ] 37

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Keywords: ., bookcentury1900, bookdecade1910, bookidmemoir, booksubjectzoology