. Elements of zoölogy : a textbook. Zoology. ENTOMOSTKACA. 365 first six legs performing the FIG. 495. functions of jaws ! The embryonic stages (Figs. 494, 495, 497) of Limulus—so beautifully re- presented by Dr. A. S. Packard, Jr.*, — together with the adult forms, sug- gest the close relationship of the Horse-shoe Crabs . , rn ._,. Another view of Horse-shoe Crab just With iRILOBATA (JPlgg. 438, before hatching-magnified. 499), the well-known fossil forms of the Silurian, Devo- nian, and Carboniferous rocks. And not far removed from the Merostomata and Trilobata are the extinct Euryp- FIG. 4
. Elements of zoölogy : a textbook. Zoology. ENTOMOSTKACA. 365 first six legs performing the FIG. 495. functions of jaws ! The embryonic stages (Figs. 494, 495, 497) of Limulus—so beautifully re- presented by Dr. A. S. Packard, Jr.*, — together with the adult forms, sug- gest the close relationship of the Horse-shoe Crabs . , rn ._,. Another view of Horse-shoe Crab just With iRILOBATA (JPlgg. 438, before hatching-magnified. 499), the well-known fossil forms of the Silurian, Devo- nian, and Carboniferous rocks. And not far removed from the Merostomata and Trilobata are the extinct Euryp- FIG. 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 Tenney, Sanborn, 1827-1877. New York : Scribner
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