104 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 2 



PLATE 11 



Fig. 1. Ignanacold luiviculanus. \ entral view of extended specimen. 



Fig. 2. Iguanacola navicuhirius. Diagram of cirrus sac and metraterm, A-en- 

 tral view. 



Fig. 3. Iguanacola navicuhirius. Lateral view of contracted specimen. 



Fig. 4. Iguanacola navicuhirius. Egg. 



Fig. 5. Myosaccus amblyrhynchi. \^entral view of extended specimen. 



Fig. 6. Myosaccus amblyrhynchi. Cross section through region of the geni- 

 tal pores. 



Fig. 7. Myosaccus amblyrhynchi. Diagram of excretory system. 



Fig. 8. Myosaccus amblyrhynchi. Egg. 



