440 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 19 



PLATE 6 



Euchone arenae, new species (Sta. 2788) 



1. Ventral end of radiolar base, showing one of two simple radi- 

 cles, X 48. 



2. Thoracic superior seta, in lateral view, x 588. 



3. Thoracic inferior seta, in lateral view, x 588. 



4. Thoracic uncinus, in lateral view, x 588. 



5. Abdominal uncinus, in lateral view, x 1440. 



6. Posterior anal groove, in ventral view, x 40. 



Euchone limicola Reish (Alamitos Bay) 



7. Thoracic seta, in lateral view, x 3 36. 



8. Abdominal uncinus, in frontal view, x 3 36. 



9. Abdominal uncinus, in three-fourths view, x 780. 

 10. Posterior anal groove, in ventral view, x 46. 



