Plate LXX 



Fig. 104. Composite frontal section of the 20 millimeter embr>'o. Columbia Collec- 

 tion, No. Sj, in which several sections of the recurrent parotid branches 

 (gg) have been superimposed, X 85, reduced to i. 



Fig. 105. Composite frontal section of the 31 millimeter embryo. Columbia 

 Collection, No. 144, in which several sections of the recurrent parotid 

 branches have been superimposed, X 85, reduced to 3. 



la. Secondary buccal sulcus. 



6. Orbital inclusion. 



12. Parotid anlage. 



2Q. Lingual sulcus. 



JO. Submaxillar)' anlage. 



y. Greater sublingual anlage. 



jS. Tongue. 



48. Lingual nerve. 



4(). Submaxillarj' ganglion. 



yo. Digastric muscle. 



5/. Mylohyoid muscle. 



j3. Genioglossus muscle. 



5J. Geniohyoid muscle. 



5-/. Inferior maxilla. 



j6. Meckel's cartilage. 



55'. Zygoma. 



59. Alveolar process. 



60. Palate process. 

 dj. Palate bone. 



70. Inferior dental nerve. 



7 J. Masseter muscle. 



-_;. Internal pterygoid muscle. 



(V5. Nasopharynx. 



99. Recurrent branch of parotid. 



