PLATE XXI II. 



Molgula conchilega (Miill.). (p. 41) 



FIGS. 



1-3. 



4-6. 



Views of 



mantle : 

 side. 



1. Right 

 above, r. t. 



m 



one and a half times natural size. 

 2. Left side. 3. As seen from 

 ig. 2, blood-vessel from mantle to 

 test. 



Mantle laid open : about twice natural size, 

 external surface of branchial sac, etc. 



4. Showing 

 T cli. male 



channels, 

 rio-ht ovary 



5. Showing 



internal surface, etc. r. r. 

 I. v. left ovary. 6. With outer mem- 

 brane of branchial sac turned back, showing interior. 



