PLATE 9 



EXPLANATION OF FIGURE 



Fig. 11 Ventral view of the arteries, veins and lymphatics found on the left 

 side of the head and ])harynx in a 17.5 mm. brook trout embryo. P. E. C. 393. 



REFERENCES 



1, Subocular lymph sac 



2, Medial pharyngeal communication; 

 the point at which the medial pharyn- 

 geal lymphatic communicates with 

 the precardinal vein 



3, The lateral pharyngeal lymphatic 



4, Medial pharyngeal lymphatic 



5, Precardinal or jugular lymphatics 



6, Precardinal or jugular vein 



9, Cardino-Cuvierian communication; 

 the point at which the lateral pharyn- 

 geal lymphatic communicates with 

 the precardinal vein in the cardino- 

 Cuvierian district 

 10, Lymphatic of the lateral line of the 

 trunk 



13, Otic communication; the point at 

 which the lateral pharyngeal lym- 

 phatic communicates with the pre- 

 cardinal vein near the caudal end of 

 the otocyst 



14, Dorsal aorta 



15', Efferent pseudobranchial artery 

 (ophthalmic artery) 



16, First efferent aortic arch 



17, Second efferent aortic arch 



18, Third efferent aortic arch 



19, Fourth efferent aortic arch 



21, Superficial facial lymphatic 



22, Carotid artery 



30, Pericardial lymphatic 



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