PLATE 11 



EXPLANATION OF FIGURES 



30 and 31 Successive sections after an interval of nine sections behind that 

 pictured in figure 29. Series 53, slide 3, row 5, section 12. X 1100. 



REFERENCES 



/., discontinuous anlage of the inferior 

 lateral lymph duct; figure 30 shows 

 the anterior tip 



p.m., p.L. medial and lateral post- 

 cardinal di\'isions 



p. a., dorsal anastomosis between post- 

 cardinal divisions 

 w., pronephric duct 

 ep., epidermis 



204 



