. The crayfish : An introd. to the study of zoology. --. Crayfish; Zoology. 250 THE COMPARATIVE MORPHOLOGY OF THE CRAYFISH. are susceptible of being grouped into six genera—Asta- coides (fig. 65), Astacopsis, Ch<$raps, Parastactis (fig. 64),. Fig. 64.— Parasiticus hrasUiensis (J nat. size). From southern Brazil. EngcexiSy and Parancphrops—on the same principle as that which has led to the grouping of the Northern forms into two genera. But the same convenience which has. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabilit

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. The crayfish : An introd. to the study of zoology. --. Crayfish; Zoology. 250 THE COMPARATIVE MORPHOLOGY OF THE CRAYFISH. are susceptible of being grouped into six genera—Asta- coides (fig. 65), Astacopsis, Ch<$raps, Parastactis (fig. 64),. Fig. 64.— Parasiticus hrasUiensis (J nat. size). From southern Brazil. EngcexiSy and Parancphrops—on the same principle as that which has led to the grouping of the Northern forms into two genera. But the same convenience which has. 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 Huxley, Thomas Henry, 1825-1895. London : K. Paul, Trench, Trubner

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1896