242 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



PLATE 22 

 Fig. 1. Scrupocellaria diegensis Robertson, lateral and axial vibracula. 



Fig. 2. Scrupocellaria scabra (van Beneden), lateral and axial 

 vibracula. 



Fig. 3. Bugula mollis Harmer, incomplete ovicell and joint at base 

 of branch. 



Fig. 4. Bugula cucullifera Osburn, hooded ovicell. 



Fig. 5. The sanoe, spines at tip of branch. 



Fig. 6. Bugula pacifica Robertson, diminutive, cap-like ovicell. 



Fig. 7. Bugula longirostrata Robertson, vestigial ovicell and elongate 

 avicularia. 



Fig. 8. Bugula minima (Waters), absence of spines, small proximal 

 avicularia. 



