234 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 10 



PLATE 17 



(Photographs by Dr. Robert L. Rutherford, all natural size.) 

 Figures 335, 336, Diopatra tridentata (coll. A 42-39): Fig. 335, por- 

 tion of tube with outer coat of lower portion somewhat broken 

 away, showing parchmentiike inner lining; Fig. 336, portion of 

 another tube from the same collection, the upper end represents 

 the distal opening. 



Figures 337, 338, Nothria lonchylega: Fig. 337, distal portion of 

 tube seen from front (coll. 234-34); Fig. 338, another similar 

 tube, seen from the side (coll. 1316-41). 



