PLATE XV. 



Fki. 75. — Continuation <>f scries 63. 

 Fk(. 70. — Continuation of series <>:;. 

 around the oesophagus. 

 Fig. 77. — Continuation of series 63. 

 Fig. 7S. — Continuation of series <>:'.. 

 Fig. 79. — Continuation of series 63. 

 Fig. 80. — Continuation of series 63. 

 144 



Taken a little posteriorly to that of fig. 7*. | Ob. X 8 Oc. Camera. X 130. 

 Taken through the region where the branches of the efferent blood vessel pass 

 | Oh. X8 0c. Camera. X 130. 



Taken a little posteriorly to that of fig. 7<i. jj Ob. X 8 Oc. Camera. X 130. 

 Taken a little posteriorly to that of fig. 77. | Ob. X 8 Or. Camera. X 130. 

 Longitudinal muscles begin to appear, jj Ob. X 8 Oc. Camera. X 130. 

 Taken a little posteriorly to that of fig. 79. j Ob. X 8 Oc. Camera. X 130. 



