PLATE 80. 



Nicolea galapagensis Chamberlin. 



Figures 1-3. 



1. — Caudal end, dorsal view. X 20. 



2. — Outline of right lateral flap of third somite. X 20. 



3. — Thoracic uncinus. X 860. 



Thelepus pericensis Chamberlin. 

 Figures 4-6. 



4. — Anterior seta, distal portion. X 225. 

 5. — Anterior uncinus, frontal view. X 860. 

 6.— The same, profile. X 860. 



Terebellides eurystethus Chamberlin. 

 Figures 7-15. 



7. — Pinnula of anterior abdominal region. X 51 . 



8. — Pinnula of posterior abdominal region. X 51. 



9. — Fourteenth left notopodium, anterior view. X 22. 

 10. — Seta of tenth thoracic somite, extreme tip missing. X 225. 

 11. — Thoracic uncinus. X 860. 

 12. — Abdominal uncinus, profile view. X 860. 

 13. — Abdominal uncinus, frontal view. X 860. 

 14. — Another abdominal uncinus. X 860. 

 15. — Crown of teeth of uncinus viewed nearly from direction of points of teeth. X 860. 



