PLATE XLIL 



FIGS. 



1-7. Styela pomaria (Sav.). (p. HO) 1 and 2. Test 

 and mantle removed, exposing (in fig. 1) bran- 

 chial sac, and (in fig. 2) digestive and repro- 

 ductive organs, the branchial sac being re- 

 moved : about twice natural size. 3-7. Ovaries, 

 various views : magnified. 



8 and 9. Styela sulcatula (Alder), (p. 113) Test and mantle 

 removed: about twice natural size. 8. Exposing 

 branchial sac. 9. Branchial sac removed, ex- 

 posing digestive and reproductive organs. b.l. 

 biliary lobe. 



10 and 11. Styela granulata (Alder), (p. 115) 10. Test 

 and mantle removed, exposing branchial sac : 

 about three times natural size. 11. Exposing 

 digestive and reproductive organs, the branchial 

 sac being removed. 



