. The elasmobranch fishes. Chondrichthyes. THE ELASMOBRANCn FISHES 181 the sharks may it be spoken of as a true anastomoticns. In a type like Scyllium it courses by the spiracular region almost uninterruptedly and passes through a foramen in the orbit to join the internal carotid. In some of the other forms (Acanthias, Zxjgaena, fig. 170) instead of being straight it may pursue a most tortuous course. In these, and in many other forms it is interrupted at the spiracle. In CetorJiinus (fig. 171b), for example, it forms the so-called "won-. Please note that these images are extracted from s
. The elasmobranch fishes. Chondrichthyes. THE ELASMOBRANCn FISHES 181 the sharks may it be spoken of as a true anastomoticns. In a type like Scyllium it courses by the spiracular region almost uninterruptedly and passes through a foramen in the orbit to join the internal carotid. In some of the other forms (Acanthias, Zxjgaena, fig. 170) instead of being straight it may pursue a most tortuous course. In these, and in many other forms it is interrupted at the spiracle. In CetorJiinus (fig. 171b), for example, it forms the so-called "won-. 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 Daniel, J. Frank (John Franklin), 1873-1942. Berkeley,Calif. , University of California press
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