106 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 2 



PLATE 12 



Fig. 9. Cetiosaccus galapagensis. Extended specimen, ventral view. 



Fig. 10. Cetiosaccus galapngensis. Diagram of cirrus sac and metraterm, 

 ventral ^'iew. 



Fig. 11. Cetiosaccus galapngensis. Ventral view of anterior end of con- 

 tracted specimen. 



