PLATE XII. 



FIG. 



1. BUGULA PLUMOSA, p. 84 j nat. size. 

 2-4. . 



&' , avicularia. 



6, 7. BUGULA GRACILIS, var. UNCINATA, p. 86 ; prehensile 

 appendages. See Plate XV. 



8. BUGULA PURPUROTINCTA, p. 89 j nat. size. 

 9, 10. } zooecia. 



- 11 - , dorsal surface. 



1 9 



** , ooecmm. 



