PLATE 7 



EXPLANATION' OF FIGURES 



Figures 14 and lo. Injections of the right and left sides of the late stage of 

 K. palustris in the third period. Figure 14 is drawn from two specimens. The 

 anterior vessels from no. 4(5 divide at the beginning of the jugular duct to invade 

 the head, the dorsal set passing around the ear vesicle while the ventral duct con- 

 tinues into the enlarged temporal sinus. In this period, the lymph heart plexus is 

 definitely replaced by the 'dorsal reception duct.' All plexuses and peripheral proc- 

 esses, except those just indicated as from no. 4(5, are drawn from sj>eciinen no. 6. 

 Figure 15, from the left side of the same specimen (no. 6) demonstrates more 

 clearly the relations of the lymph heart; and also more definitely the connection 

 of the ventral lymphatic with the main duct of the lateral lymph plexus. 



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