. Zoology : for students and general readers . Zoology. Fig. 231.—Comple- mentary male of Seal- peUnm regium, greatly enlarged.—After Wy- vUle-Tliompson, Pig ZiO.—Scalpellum rer/lum. a, complementary male, lodged within tbe valves. —After Wyville- Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Packard, A. S. (Alpheus Spring), 1839-1905. New York : Henry Holt

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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1879