Plate L\II 



Fig. 44. Reconstruction of the ectal surface of the epithelium of the right buccal 



sulcus in a 15 millimeter embr>-o. Columbia Collection, Xo. 219 



X 300. reduced to j. 

 Fig. 45. Reconstruction of the ectal surface of the epithelium of the left buccal 



sulcus in a 15 millimeter embryo. Columbia Collection, No. 216, X 



300, reduced to J. 



I. Buccal sulcus. 



-'. .\ngulus oris. 



7. Orbital inclusion, pars lata. 



8. Orbital inclusion, pars cylindrica. 

 Q. Orbital inclusion, lateral process. 



10. Orbital inclusion, cranial process. 



12. Parotid anlage. 



75. Orbitoparotid inter\'al. 



7(5. Orbitoparotid bridge. 



77. Orbitoparotid sprout. 



64. Superior dental anlage. 



