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TRANSACTIONS OF THE AMERICAN PHILOSOPHICAL SOCIETY 



This seems to suggest genetic instability with but little regard to the usefulness of the 

 experiments. 



These thin-skulled scorpaenoids afford some interesting records of the development and 



stale-bone ' 



ros/car/- 



Fig. 212. Coitus octodecimspinosus . After Allis. 



growth of the skull elements (Fig. 214). The hyomandibular, for example, has certain 

 densely built tracts, including the two projections for articulation with the sphenotic and 

 pterotic, the pedicle for the opercular, the crest for the preopercular and the lower limb 



supel - 



Scorpaena 



B 



Myoxocephaliis 



Fig. 213. A. Scorpima sp. B. Myoxocethalus jaok. Tod view. 



