. An introduction to the study of zoology. Zoology. 224 AN INTRODUCTION TO ZOOLOGY. spikes and spines, which serve at once for ornament and defence; a striking instance is the Venus' Comb, Murex Kg. 77.âShells of Siplionostonmtous Gasteropods. 1, Venus' Cnmb ITui-cr Unuispina; 2, Sinistral vaviety nf the Spindle-shell, i'lisiw contrarius â '3 The small Whelk or Purple, Purpura turtUus. , ' ' The spiral of the shell is occasionally found to be reversed, and in some genera it is always so. These. Please note that these images are extracted from scanned page images that may have been

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. An introduction to the study of zoology. Zoology. 224 AN INTRODUCTION TO ZOOLOGY. spikes and spines, which serve at once for ornament and defence; a striking instance is the Venus' Comb, Murex Kg. 77.âShells of Siplionostonmtous Gasteropods. 1, Venus' Cnmb ITui-cr Unuispina; 2, Sinistral vaviety nf the Spindle-shell, i'lisiw contrarius â '3 The small Whelk or Purple, Purpura turtUus. , ' ' The spiral of the shell is occasionally found to be reversed, and in some genera it is always so. These. 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 Lindsay, B. London, S. Sonnenschein

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895