PLATE 7 



EXPLANATION OF FIGURE 



8 Reconstruction showing the j unction of the azygos and pre-azygos segments 

 of the thoracic duct in a 20 mm. Tragulus embryo. Collection No. 202. X 100. 

 24, aorta; 28, azygos segment of the thoracic duct; 31, caudal division of the pre- 

 azygos segment of the thoracic duct; 50, junction of the azygos and pre-azygos 

 segments of the thoracic duct. 



234 



