PLATE XVI. 



Fig. 81. Continuation of series 63. Taken a little posteriorly to that of fig. 80. s Ob. x 8 Oc. Camera. X 130. 

 Fig. 82. Continuation of scries (>:i. Typical transverse section through the middle of the trunk. 1 Ob. X 8 Oc. 



Camera. X 130. 

 Fig. 83. Longitudinal section through the recipient and distributing vessels. J Ob. X 4 Oc. Camera. X450. 

 L46 



