Plate XI . 



Fig. 



1. The superficial bones of the right or upper side of the liead of the Common 

 Sole. 



Fig. 2, The superficial bones of the left or lower side. 

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Fig. 3. The bones of the branchial arches and paired fins, lateral view. 

 Fig. 4. The bony branchial arches spread out and seen from the dorsal side. 

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Fig. 5. The skull, showing the separate bones and their sutures, from the right side. 

 Fig. 6. The same from the left side. 

 Fig. 7. The sam.e from the dorsal side. 

 Fig. 8. The posterior surface. 

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