PLATE XXXI. 



FIGS. 



1 and 2. Cynthia rosea Alder, (p. 76) 1. Test and mantle 

 laid open, exposing branchial sac. 2. Branchial 

 sac removed, exposing digestive and reproductive 

 organs. Both figures about one and a half natural 

 size. 



3-5. Cynthia clandicans Sav. (p. 78) 3. Test and 

 mantle laid open, exposing branchial sac. 4. 

 Branchial sac removed, exposing digestive and re- 

 productive organs. Both figures about twice natu- 

 ral size. 5. Upper end of endostyle : much more 

 enlarged. 



6-8. Cynthia squamulosa Alder, (p. 81) 6. Test and 

 mantle laid open, exposing branchial sac. 7. 

 Branchial sac removed, exposing digestive and 

 reproductive organs. Both figures about three 

 times natural size. 8. A cluster of ovaries : 

 much more enlarged. 



