PLATE XIII. 



Fig. 63. — Transverse section through Phoronis 



X130. 

 Fig. 64. — Continuation of series 63. 

 Fig. 65. — Continuation of series 63. 

 Fig. 66. — Continuation of series 63. 

 Fig. 67. — Continuation of series 63. 

 Fig. 68. — Continuation of series 63. 



| Ob. X8 Oe. Camera 

 140 



chitecta. Taken through tentacles. ; OI>. 



8 Oc. Camera. 



Taken near base of tentacles. | Ob. X 8 Oc. Camera. X 130. 

 Taken through epistome. f, Ob. X 8 Oc. Camera. X 130. 

 Taken through anal papilla. § Ob. X 8 Oc. Camera. X 130. 

 Taken through nephridial opening, 'i Ob. X 8 Oc. Camera. X 130. 



Taken through the transverse septum and below the nephridial openings. 

 . X 130. 



