232 ALLAX HANCOCK PACIFIC EXPEDITION'S VOL. 10 



PLATE 16 



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



Figures 331-333, Diopatra ohliqua: Fig. 331, part of tube with parch- 

 mentlike membrane at base, from type collection (770-38) ; 

 Figs. 332, 333, parts of 2 tubes collected from Peru (coll. 365-35). 



Figure 334, Diopatra neotiidens: part of tube from distal end (coll. 

 1057-40). 



